Fluorescence analysis detection method based on phosphorus element content in ammonium phosphate compound fertilizer

Abstract

The invention discloses a fluorescence analysis and detection method based on the content of phosphorus in an ammonium phosphate compound fertilizer, and relates to the technical field of fluorescence analysis and detection. The fluorescence analysis detection method based on the content of the phosphorus element in the ammonium phosphate compound fertilizer comprises the following steps: acquiring a pre-detection coincidence index; obtaining a fluorescence signal interference score; obtaining a stability evaluation value; and judging the content of the phosphorus element. According to the method, whether sample determination is executed or not is judged through the obtained pre-detection coincidence index, then whether a relation curve graph is drawn or not is judged based on the obtained fluorescence signal interference score, finally, whether the phosphorus element content is obtained or not is judged based on the obtained stability evaluation value, and meanwhile a fluorescence analysis detection report is generated according to a fluorescence analysis detection result. The effect of improving the reliability of the fluorescence analysis detection result of the phosphorus element content in the ammonium phosphate compound fertilizer is achieved, and the problem that the correlation between the phosphorus element content and the fluorescence intensity is not high in the fluorescence analysis detection process of the ammonium phosphate compound fertilizer in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of fluorescence analysis detection, and in particular to a fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer. Background Art

[0002] With the rapid development of modern agriculture, improving crop yield and quality has become an important goal of agricultural production. As an important nitrogen-phosphorus compound fertilizer, ammonium phosphate compound fertilizer is widely used in agricultural production because it contains nitrogen and phosphorus elements required for crop growth. However, with the increasing demand for nutrients from crops, the accurate detection of the phosphorus content in ammonium phosphate compound fertilizer has become increasingly important. In recent years, with the continuous development of fluorescence analysis and detection technology, its application in the field of fertilizer detection has become more and more extensive. Through fluorescence analysis and detection technology, the content of phosphorus in ammonium phosphate compound fertilizer can be quickly and accurately detected, providing strong technical support for fertilizer quality control and agricultural production.

[0003] The existing technology places the prepared ammonium phosphate compound fertilizer sample in the sample chamber of an X-ray fluorescence spectrometer for X-ray irradiation, then splits the X-ray fluorescence generated by a spectroscopic system to obtain characteristic ray spectra of different wavelengths, and finally analyzes the wavelength and intensity of the characteristic ray spectra to obtain the phosphorus content, thereby realizing rapid detection of the phosphorus content in the ammonium phosphate compound fertilizer.

[0004] For example, the invention patent with announcement number: CN114965531B announces a method for rapid detection of iron content in dysprosium-iron alloy based on X-ray fluorescence, including: collection and processing of characteristic peaks of pure elements; establishment of a correction curve between iron element weight and actual iron content; acquisition of iron content range; and determination of samples of unknown content in dysprosium-iron alloy.

[0005] For example, the patent application with publication number: CN117233190A discloses a fluorescence analysis detection method for the content of phosphorus and iron in lithium iron phosphate, which includes: digesting the lithium iron phosphate to be tested with acid to obtain a solution to be tested; measuring the solution to be tested with an X-ray fluorescence spectrometer in an air atmosphere to obtain the fluorescence X-ray intensity of the iron element and the fluorescence X-ray intensity of the phosphorus element in the solution to be tested; calculating the mass concentrations of the iron element and the phosphorus element in the solution to be tested according to a first linear fitting function and a second linear fitting function, respectively, to obtain the contents of the iron element and the phosphorus element in the lithium iron phosphate to be tested.

[0006] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the prior art, when multiple elements are present in an ammonium phosphate compound fertilizer sample, complex analysis and correction of the characteristic ray spectra are required, which requires more manual intervention and may lead to deviations in the test results. There is also a problem that the phosphorus content in the fluorescence analysis process of ammonium phosphate compound fertilizer is not highly correlated with the fluorescence intensity. Summary of the invention

[0008] The embodiment of the present application solves the problem of low correlation between phosphorus content and fluorescence intensity in the fluorescence analysis detection process of ammonium phosphate compound fertilizer in the prior art by providing a fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer, thereby improving the reliability of the fluorescence analysis detection results of the phosphorus content in ammonium phosphate compound fertilizer.

[0009] The embodiment of the present application provides a fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer, comprising the following steps: step 1, comparing the actual operation data of the fluorescence analyzer in the process of pre-detection through the sample wafer to be tested with the reference set data to obtain a pre-detection compliance index, wherein the pre-detection compliance index is used to evaluate the degree of match between the actual operation data of the fluorescence analyzer within a preset time period and the reference set data; step 2, judging whether to perform sample determination based on the obtained pre-detection compliance index, and if the sample determination is performed, monitoring the fluorescence intensity of the phosphorus element in the sample wafer to be tested in real time and obtaining the fluorescence intensity according to the fluctuation of the fluorescence intensity of the phosphorus element; The light signal interference score is used to evaluate the degree of interference of the fluorescence signal waveform emitted by the phosphorus element in the sample wafer to be tested; step three, based on the obtained fluorescence signal interference score, determine whether to draw a relationship curve diagram, if so, obtain a stability evaluation value according to the change of fluorescence intensity on the relationship curve diagram, and at the same time determine whether to obtain the phosphorus content based on the obtained stability evaluation value, and the stability evaluation value is used to evaluate the stability of the relationship curve diagram during the drawing process; step four, if the phosphorus content is obtained, compare the obtained phosphorus content with the expected phosphorus content to determine whether the fluorescence analysis test is completed and generate a fluorescence analysis test report.

[0010] Furthermore, the pre-detection coincidence index is obtained by processing the excitation wavelength score, the emission wavelength score and the integration time score; the excitation wavelength score is the ratio of the absolute value of the difference between the actual excitation wavelength and the reference excitation wavelength to the reference excitation wavelength; the emission wavelength score is the ratio of the absolute value of the difference between the actual emission wavelength and the reference emission wavelength to the reference emission wavelength; the integration time score is the ratio of the absolute value of the difference between the actual integration time and the reference integration time to the reference integration time.

[0011] Furthermore, the specific steps for obtaining the fluorescence signal interference score are:

[0012] L1, determine whether the content of the phosphorus element to be measured is linearly related to the concentration during the sample measurement process. If so, execute L2, otherwise prompt the preset personnel to reduce the content of the fluorescence quencher and re-measure the sample; L2, monitor the spectral line overlap deviation of the phosphorus element to be measured in real time during the sample measurement process, and determine whether the spectral line overlap deviation is not greater than the spectral line overlap deviation preset in the database. If so, execute L3, otherwise adjust the fluorescence spectrum wavelength parameter and re-obtain the spectral line overlap deviation of the phosphorus element to be measured; L3, obtain the spectral line overlap score, and at the same time measure the total amount of scattered light in real time and obtain the scattered light interference score in combination with the total amount of fluorescence signal of the phosphorus element to be measured, and obtain the fluorescence signal interference score by processing the obtained pre-detection coincidence index and the spectral line overlap score; the spectral line overlap deviation is the length difference between the fluorescence spectrum wavelength of the phosphorus element to be measured and the longest spectrum wavelength among other spectrum wavelengths; the fluorescence spectrum wavelength parameters include slit width and wavelength response range; the spectral line overlap score is the ratio of the spectral line overlap deviation to the spectral line overlap deviation preset in the database; the scattered light interference score is the ratio of the total amount of scattered light to the total amount of fluorescence signal of the phosphorus element to be measured.

[0013] Furthermore, the specific limiting expression of the fluorescence signal interference fraction is:

[0014]

[0015] In the formula, e is a natural constant, GAN represents the fluorescence signal interference score of the sample disc to be tested during the sample determination process, YU represents the pre-detection compliance index of the fluorescence analyzer during the pre-detection process, and YU max represents the maximum allowable pre-detection compliance index, Q represents the scattered light interference fraction of the sample disc to be tested during the sample determination process, ΔP represents the spectral line overlap fraction of the sample disc to be tested during the sample determination process, ΔP1 represents the spectral line overlap deviation of the sample disc to be tested during the sample determination process, ΔP1 0 Indicates the preset spectral line overlap deviation.

[0016] Furthermore, the stability evaluation value is obtained by the following method: real-time monitoring of the salt element concentration in the sample wafer to be tested, judging whether the salt element concentration is within the allowable range of the salt concentration in the database, and if so, obtaining the salt element concentration score, otherwise prompting the preset personnel to dilute the salt in the sample wafer to be tested; real-time monitoring of the signal-to-noise ratio of the fluorescence analyzer corresponding to the fluorescence signal generated by the phosphorus element in the sample wafer to be tested, and combining the obtained salt element concentration score and the fluorescence signal interference score to obtain the stability evaluation value; the salt element concentration score is obtained by comparing the salt element concentration with the reference salt element concentration in the database.

[0017] Furthermore, the specific process of comparing the obtained phosphorus content with the expected phosphorus content to determine whether the fluorescence analysis test is completed is: obtaining the phosphorus content deviation and judging whether the obtained phosphorus content deviation is less than the allowable deviation of the phosphorus content in the database: if the obtained phosphorus content deviation is less than the allowable deviation of the phosphorus content in the database, the corresponding sample disc to be tested is marked as having completed the fluorescence analysis test; if the obtained phosphorus content deviation is not less than the allowable deviation of the phosphorus content in the database, the corresponding sample disc to be tested is marked as having not completed the fluorescence analysis test; the phosphorus content deviation is the absolute value of the difference between the phosphorus content and the expected phosphorus content.

[0018] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0019] 1. Whether to perform sample measurement is determined by the obtained pre-detection compliance index, and then whether to draw a relationship curve diagram is determined based on the obtained fluorescence signal interference score. Finally, whether to obtain the phosphorus content is determined based on the obtained stability evaluation value. If the phosphorus content is obtained, the result of the fluorescence analysis test is used to generate a fluorescence analysis test report, thereby improving the accuracy of the fluorescence analysis test, and further improving the reliability of the fluorescence analysis test results of the phosphorus content in the ammonium phosphate compound fertilizer, effectively solving the problem of low correlation between the phosphorus content and the fluorescence intensity in the fluorescence analysis test process of the ammonium phosphate compound fertilizer in the prior art.

[0020] 2. By real-time monitoring the spectral line overlap deviation of the phosphorus element to be measured during the sample determination process, when the spectral line overlap deviation is not greater than the spectral line overlap deviation preset in the database, the spectral line overlap score is obtained, and at the same time, the total amount of scattered light is measured in real time and combined with the total amount of fluorescence signal of the phosphorus element to be measured to obtain the scattered light interference score, and the fluorescence signal interference score is obtained by processing the obtained pre-detection coincidence index and spectral line overlap score, thereby improving the accuracy of obtaining the fluorescence signal interference score, and then achieving a more accurate assessment of the degree of interference of the fluorescence signal.

[0021] 3. By real-time monitoring of the salt element concentration in the sample wafer to be tested, when the salt element concentration is within the allowable range of salt concentration in the database, the salt element concentration score is obtained, and then the signal-to-noise ratio of the fluorescence analyzer corresponding to the fluorescence signal generated by the phosphorus element in the sample wafer to be tested is monitored in real time. Finally, the stability evaluation value is obtained by combining the obtained salt element concentration score and the fluorescence signal interference score, thereby achieving more accurate acquisition of the stability evaluation value, and then achieving improved accuracy and reliability in fluorescence intensity acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A flow chart of a fluorescence analysis detection method for phosphorus content in ammonium phosphate compound fertilizer provided in an embodiment of the present application;

[0023] Figure 2 A specific flow chart of fluorescence analysis detection provided in the embodiments of the present application;

[0024] Figure 3 A two-dimensional coordinate diagram of the salt element concentration fraction-stability evaluation value provided in the embodiments of the present application;

[0025] Figure 4 A two-dimensional coordinate diagram of the fluorescence signal interference score-stability evaluation value provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The embodiment of the present application solves the problem of low correlation between phosphorus content and fluorescence intensity in the fluorescence analysis detection process of ammonium phosphate compound fertilizer in the prior art by providing a fluorescence analysis detection method based on phosphorus content in ammonium phosphate compound fertilizer. The embodiment of the present application solves the problem of low correlation between phosphorus content and fluorescence intensity in the fluorescence analysis detection process of ammonium phosphate compound fertilizer in the prior art. The embodiment of the present application solves the problem of low correlation between phosphorus content and fluorescence intensity in the fluorescence analysis detection process of ammonium phosphate compound fertilizer in the prior art by comparing the actual operation data of the fluorescence analyzer in the process of pre-detection of the sample disc to be tested with the reference setting data to obtain the pre-detection compliance index, and then judging whether to perform sample determination based on the obtained pre-detection compliance index. If the sample determination is performed, the fluorescence intensity of phosphorus in the sample disc to be tested is monitored in real time and the fluorescence signal interference score is obtained according to the fluctuation of the fluorescence intensity of phosphorus. Finally, judging whether to draw a relationship curve diagram based on the obtained fluorescence signal interference score, if so, obtaining a stability evaluation value according to the change of fluorescence intensity on the relationship curve diagram, and judging whether to obtain the phosphorus content based on the obtained stability evaluation value, and if the phosphorus content is obtained, comparing the obtained phosphorus content with the expected phosphorus content to determine whether the fluorescence analysis detection is completed and generating a fluorescence analysis detection report, thereby improving the reliability of the fluorescence analysis detection result of the phosphorus content in the ammonium phosphate compound fertilizer.

[0027] The technical solution in the embodiment of the present application is to solve the problem that the phosphorus content and the fluorescence intensity in the fluorescence analysis detection process in the above-mentioned ammonium phosphate compound fertilizer are not highly correlated. The overall idea is as follows:

[0028] Whether to perform sample measurement is determined by the obtained pre-detection compliance index, and then whether to draw a relationship curve diagram is determined based on the obtained fluorescence signal interference score. Finally, whether to obtain the phosphorus content is determined based on the obtained stability evaluation value. If the phosphorus content is obtained, the results of the fluorescence analysis test are used to generate a fluorescence analysis test report, thereby achieving the effect of improving the reliability of the fluorescence analysis test results of the phosphorus content in ammonium phosphate compound fertilizer.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1As shown in the figure, it is a flow chart of a fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer provided by an embodiment of the present application, the method comprising the following steps: step 1, comparing the actual operation data of the fluorescence analyzer in the process of pre-detection through the sample disc to be tested with the reference set data to obtain a pre-detection compliance index, the pre-detection compliance index is used to evaluate the degree of match between the actual operation data of the fluorescence analyzer within a preset time period and the reference set data; step 2, judging whether to perform sample determination based on the obtained pre-detection compliance index, if the sample determination is performed, real-time monitoring the fluorescence intensity of the phosphorus element in the sample disc to be tested and calculating the fluorescence intensity of the phosphorus element according to the fluctuation of the fluorescence intensity of the phosphorus element The fluorescence signal interference score is obtained based on the dynamic situation, and the fluorescence signal interference score is used to evaluate the degree of interference to the fluorescence signal waveform emitted by the phosphorus element in the sample wafer to be tested; step three, based on the obtained fluorescence signal interference score, determine whether to draw a relationship curve diagram, if so, obtain a stability evaluation value according to the change of fluorescence intensity on the relationship curve diagram, and at the same time, determine whether to obtain the phosphorus content based on the obtained stability evaluation value, and the stability evaluation value is used to evaluate the stability of the relationship curve diagram during the drawing process; step four, if the phosphorus content is obtained, compare the obtained phosphorus content with the expected phosphorus content to determine whether the fluorescence analysis test is completed and generate a fluorescence analysis test report.

[0031] In this embodiment, the pre-test is performed at room temperature, such as 25°C; the sample disc to be tested is an ammonium phosphate compound fertilizer sample that has been crushed, ground and tabletted; the tabletting processing parameters of the sample disc to be tested are the same, wherein the tabletting processing parameters generally include tabletting pressure and holding time; the pre-test is used to evaluate whether the actual working state of the fluorescence analyzer and the fluorescence analysis detection conditions meet the requirements; the actual operation data includes the actual excitation wavelength, which is measured in real time by a spectrometer; the actual emission wavelength, which is measured in real time by a fluorescence spectrophotometer; the actual integration time, which is displayed in real time by an oscilloscope; the reference setting data includes a reference excitation wavelength, a reference emission wavelength and a reference integration time; the sample determination is used to excite the phosphorus element in the sample disc to be tested; the relationship curve diagram is used to visualize the relationship between the fluorescence intensity of the phosphorus element in the sample disc to be tested and the phosphorus element content; the fluorescence analysis test report includes the sample disc information to be tested, generally including but not limited to mass, volume and shape; the fluorescence analysis test time and the fluorescence analysis test result, generally expressed in binary, 0 represents an uncompleted fluorescence analysis test, and 1 represents a completed fluorescence analysis test; wherein the fluorescence analysis test report exists in the form of an electronic document and is displayed to the user through the display screen of the fluorescence analyzer.

[0032] like Figure 2 As shown, it is a specific flow chart of the fluorescence analysis detection provided in the embodiment of the present application, which consists of Figure 2It can be seen that this example achieves a comprehensive, accurate and reliable evaluation of the fluorescence signal of the phosphorus element to be tested in the sample wafer and the stability and accuracy of the fluorescence analyzer through pre-detection, real-time monitoring, sample determination, drawing of relationship curves, stability evaluation and result comparison, thereby improving the accuracy and efficiency of fluorescence analysis and detection, and further improving the reliability of the fluorescence analysis detection results of the phosphorus content in ammonium phosphate compound fertilizer.

[0033] Furthermore, the pre-detection coincidence index is obtained by processing the excitation wavelength score, the emission wavelength score and the integration time score; the excitation wavelength score is the ratio of the absolute value of the difference between the actual excitation wavelength and the reference excitation wavelength to the reference excitation wavelength; the emission wavelength score is the ratio of the absolute value of the difference between the actual emission wavelength and the reference emission wavelength to the reference emission wavelength; the integration time score is the ratio of the absolute value of the difference between the actual integration time and the reference integration time to the reference integration time.

[0034] The reference excitation wavelength, the reference emission wavelength and the reference integration time are respectively represented by the sum and average of the historical excitation wavelengths, the historical emission wavelengths and the historical integration time of the fluorescence analyzer in the working process in the database.

[0035] In this embodiment, the specific limiting expression of the pre-detection compliance index is:

[0036]

[0037] Where n is the number of the preset time period (the total duration of all preset time periods is the total duration of the pre-detection), n = 1, 2, ..., N, N is the total number of preset time periods, e is a natural constant, YU represents the pre-detection compliance index of the fluorescence analyzer during the pre-detection process, J n Indicates the excitation wavelength fraction of the fluorescence analyzer in the nth preset time period during the pre-detection process, J1 n Indicates the actual excitation wavelength of the fluorescence analyzer during the nth preset time period during the pre-detection process, J1 0 represents the reference excitation wavelength, S n It represents the emission wavelength fraction of the fluorescence analyzer in the nth preset time period during the pre-detection process, S1 n Indicates the actual emission wavelength of the fluorescence analyzer during the nth preset time period during the pre-detection process, S1 0 represents the reference emission wavelength, F n Indicates the integral time fraction of the fluorescence analyzer in the nth preset time period during the pre-detection process, F1 n Indicates the actual integration time of the fluorescence analyzer in the nth preset time period during the pre-detection process, F1 0 Indicates the reference integral duration.

[0038] It should be understood that the pre-detection coincidence index increases with the increase of the excitation wavelength score, the emission wavelength score and the integration time score, wherein the excitation wavelength score increases with the increase of the excitation wavelength deviation, the emission wavelength score increases with the increase of the emission wavelength deviation, and the integration time score increases with the increase of the integration time deviation, wherein the excitation wavelength deviation is |J1 n -J1 0 |, the emission wavelength deviation is |S1 n -S1 0 |, the integration time deviation is |F1 n -F1 0 |.

[0039] It should be noted that the excitation wavelength score also indirectly affects the value of the emission wavelength score, which is mainly reflected in the joint effect of the excitation wavelength and the emission wavelength on the luminous efficiency of the fluorescent substance. The luminous efficiency of the fluorescent substance is usually closely related to its excited wavelength and the emitted wavelength. When the excitation wavelength deviation increases, the excitation wavelength score will increase, which usually means that the excitation efficiency is reduced, because the fluorescent substance fails to fully absorb the energy of the excitation light. At this time, the corresponding emission efficiency will be correspondingly attenuated, that is, the emission wavelength deviation increases, and the emission wavelength score also increases. Among them, the fluorescent substance refers to the laser beam emitted by the laser in the fluorescence analyzer.

[0040] The excitation wavelength score and the emission wavelength score jointly affect the value of the integration time score. When the laser fluctuation deviation and the emission wavelength deviation both increase, that is, when the excitation wavelength score and the emission wavelength score both increase, the intensity of the fluorescence signal may decrease and the stability will also be affected. At this time, in order to obtain a more reliable fluorescence intensity, the integration time may be increased to collect more fluorescence signals, which will cause the integration time score to increase because the integration time deviates from the reference integration time, that is, the optimal value.

[0041] By comprehensively considering the influence of the excitation wavelength score, the emission wavelength score and the integration time score, it is helpful for the preset personnel to adjust the parameter settings of the fluorescence analysis detection in a timely and accurate manner. For example, the integration time of the fluorescence analyzer can be increased by replacing the solvent of the sample disc to be tested and increasing the integration time parameter, so that the fluorescence signal emitted by the phosphorus element in the sample disc to be tested has sufficient intensity and stability, thereby improving the accuracy and reliability of the measurement, thereby achieving an improvement in the reliability of the fluorescence analysis detection results of the phosphorus content in ammonium phosphate compound fertilizer, and effectively solving the problem of low correlation between the phosphorus content and the fluorescence intensity in the fluorescence analysis detection process of ammonium phosphate compound fertilizer in the prior art.

[0042] Furthermore, the specific process of determining whether to perform sample measurement based on the obtained pre-detection compliance index is as follows: determining whether the obtained pre-detection compliance index is less than the maximum allowable pre-detection compliance index in the database; if so, it indicates that the actual working state of the fluorescence analyzer meets the expected requirements and sample measurement is performed; otherwise, it indicates that the actual working state of the fluorescence analyzer does not meet the expected requirements, in which case sample measurement is not performed and pre-detection is performed again.

[0043] It should be noted that the specific process of sample determination is as follows: after the laser emission of the fluorescence analyzer, the fluorescence signal emitted by the sample disc to be tested is collected by the detector of the fluorescence analyzer to obtain the phosphorus content information. The laser emission indicates that the fluorescence analyzer emits excitation light to the sample disc to be tested (used to excite the phosphorus element in the sample disc to be tested to produce fluorescence); the phosphorus content information includes the absolute content of phosphorus (such as the phosphorus content per gram of the sample disc to be tested), the relative content (such as the proportion of the phosphorus content in the sample disc to be tested to the total element content in the sample disc to be tested) and the concentration (such as the mass concentration of phosphorus in each liter of solution).

[0044] In this embodiment, the maximum allowable pre-detection compliance index is the maximum value of the historical pre-detection compliance index of the fluorescence analyzer in the historical pre-detection process in the database. It should be noted that the aforementioned database is a database for storing various setting data established before the design of the fluorescence analysis detection method for the phosphorus content in ammonium phosphate compound fertilizer. The database includes but is not limited to the maximum allowable pre-detection compliance index, the preset spectral line overlap deviation, the fluorescence signal interference threshold range, the stability assessment threshold range and the preset time period, and the various numerical values ​​therein are directly set by technical personnel. Among them, the setting basis of the fluorescence signal interference threshold range can be determined according to the actual application scenario of fluorescence analysis detection. For example, the fluorescence signal interference threshold range represents the range corresponding to the maximum and minimum values ​​of the historical fluorescence signal interference scores of the sample wafers to be tested in the database during the historical sample measurement process. In addition, the various numerical values ​​in the database can be set and fine-tuned by technical personnel according to actual debugging.

[0045] This example ensures that the actual working state of the fluorescence analyzer meets the expected requirements by performing a pre-test to determine the compliance index before sample measurement, avoids measurement errors caused by instrument failure or improper parameter settings, reduces manual intervention, greatly simplifies operating procedures and improves work efficiency, and also provides a reliable, accurate and efficient method for measuring the phosphorus content in ammonium phosphate compound fertilizers.

[0046] Furthermore, the specific steps for obtaining the fluorescence signal interference score are as follows: L1, when the obtained pre-detection compliance index is less than the maximum allowable pre-detection compliance index in the database, determine whether the content of the phosphorus element to be measured during the sample measurement process is linearly related to the concentration. If so, execute L2, otherwise prompt the preset personnel to reduce the fluorescence quencher content and re-measure the sample; L2, real-time monitoring of the spectral line overlap deviation of the phosphorus element to be measured during the sample measurement process, determine whether the spectral line overlap deviation is not greater than the spectral line overlap deviation preset in the database, if so, execute L3, otherwise adjust the fluorescence spectrum line wavelength parameters and re-obtain the spectral line overlap deviation of the phosphorus element to be measured, until the spectral line overlap deviation is greater than the spectral line overlap deviation preset in the database and then execute L3; L3, obtain the spectral line overlap score, and at the same time, measure the total amount of scattered light in real time and obtain the scattered light interference score in combination with the total amount of fluorescence signal of the phosphorus element to be measured, and obtain the fluorescence signal interference score through the obtained pre-detection compliance index and spectral line overlap score.

[0047] Among them, the preset personnel reduce the content of the fluorescence quencher by adding solvent to dilute the content of the fluorescence quencher, the spectral line overlap deviation is the length difference between the fluorescence spectrum wavelength of the phosphorus element to be measured and the longest spectrum wavelength among other spectrum wavelengths; the fluorescence spectrum wavelength parameters include slit width and wavelength response range; the spectral line overlap score is the ratio of the spectral line overlap deviation (the larger the better, because when the spectral line overlap deviation is not greater than the preset spectral line overlap deviation, spectral line overlap interference will occur, and the larger the spectral line overlap deviation, the smaller the corresponding spectral line overlap interference degree) to the spectral line overlap deviation preset in the database; the total amount of scattered light is the sum of the amount of Rayleigh light and the amount of Raman light; the scattered light interference score is the ratio of the total amount of scattered light to the total amount of fluorescence signal of the phosphorus element to be measured, wherein the total amount of scattered light and the total amount of fluorescence signal are both measured by a fluorescence spectrometer, and the longest spectrum line wavelength is the maximum value of the spectrum line wavelength other than the fluorescence spectrum line.

[0048] In this embodiment, the preset spectral line overlap deviation is represented by the result of summing and averaging the historical spectral line overlap deviations in the fluorescence signal detection process in the database; when the spectral line overlap deviation is greater than the spectral line overlap deviation preset in the database, it is necessary to prompt the preset personnel to increase the slit width and wavelength response range in the sample measurement process by increasing the slit width parameter and wavelength response range parameter in the fluorescence analyzer. Each increase requires the spectral line overlap deviation to be reacquired until the reacquired spectral line overlap deviation is no greater than the spectral line overlap deviation preset in the database, thereby improving the accuracy of sample measurement, and further improving the accuracy and reliability of obtaining the fluorescence signal interference score.

[0049] It should be understood that when the content of the phosphorus element to be measured is linearly related to the concentration, it means that the content of the fluorescence quencher in the sample measurement process is less than the maximum allowable fluorescence quencher content. When the content of the phosphorus element to be measured is nonlinearly related to the concentration, it means that the content of the fluorescence quencher in the sample measurement process is not less than the maximum allowable fluorescence quencher content. At this time, the presence of the fluorescence quencher will affect the fluorescence intensity of the phosphorus element to be measured, wherein fluorescence quenching refers to the interaction between the fluorescent substance molecules and the solvent molecules in the sample measurement process.

[0050] During the fluorescence analysis and detection process, the fluorescence signal emitted by the phosphorus element in the sample wafer to be tested is usually interfered by scattered light and spectral wavelength. This example considers whether the content of the phosphorus element to be tested is linearly related to the concentration, making the evaluation result of the interference degree of the fluorescence signal more intuitive and accurate, which helps to improve the real-time identification of these interference factors, thereby achieving an improvement in the sensitivity and accuracy of fluorescence signal detection.

[0051] Furthermore, the specific limiting expression of the fluorescence signal interference fraction is:

[0052]

[0053] In the formula, e is a natural constant, GAN represents the fluorescence signal interference score of the sample disc to be tested during the sample determination process, YU represents the pre-detection compliance index of the fluorescence analyzer during the pre-detection process, and YU max represents the maximum allowable pre-detection compliance index, Q represents the scattered light interference fraction of the sample disc to be tested during the sample determination process, Q2 represents the total amount of scattered light of the sample disc to be tested during the sample determination process, Q1 represents the total amount of fluorescence signal of the phosphorus element to be tested before the sample determination, ΔP represents the spectral line overlap fraction of the sample disc to be tested during the sample determination process, ΔP1 represents the spectral line overlap deviation of the sample disc to be tested during the sample determination process, ΔP1 0 Indicates the preset spectral line overlap deviation.

[0054] In this embodiment, assuming that the maximum allowable pre-detection coincidence index is 1.5 and the preset spectral line overlap deviation is 0.015 nm, the statistical table of changes in the fluorescence signal interference score is shown in Table 1:

[0055] Table 1 Statistics of changes in fluorescence signal interference scores

[0056]

[0057] It should be understood that, as can be seen from Table 1, the fluorescence signal interference score increases with the increase of the pre-detection coincidence index, the spectral line overlap score and the scattered light interference score. It should be noted that the pre-detection coincidence index also indirectly affects the value of the scattered light interference score. When the pre-detection coincidence index increases, the detector in the fluorescence analyzer cannot more effectively filter out the scattered light caused by the uneven surface or impurities of the sample wafer to be tested, thereby increasing the scattered light interference score. On the contrary, if the pre-detection coincidence index decreases, the detector can accurately distinguish between the fluorescence signal and the scattered light, resulting in a decrease in the scattered light interference score.

[0058] The scattered light interference fraction also indirectly affects the value of the spectral line overlap fraction. When the total amount of scattered light in the sample disc to be tested increases, these scattered lights may overlap with the fluorescence signal of the phosphorus element in the sample disc to be tested during the sample measurement process, making the fluorescence spectrum of the phosphorus element in the sample disc to be tested blurred, resulting in an increase in the spectral line overlap fraction, and then causing the accuracy of the fluorescence signal detection results to decrease.

[0059] By considering the above-mentioned indirect influence mechanism, it is helpful to improve the accuracy and reliability of sample measurement results, achieve more accurate acquisition of fluorescence interference score, and thus improve the reliability of fluorescence analysis detection results of phosphorus content in ammonium phosphate compound fertilizer, and effectively solve the problem of low correlation between phosphorus content and fluorescence intensity in the fluorescence analysis detection process of ammonium phosphate compound fertilizer in the prior art.

[0060] Furthermore, the specific process of determining whether to draw a relationship curve diagram based on the obtained fluorescence signal interference score is as follows: determine whether the obtained fluorescence signal interference score is within the fluorescence signal interference threshold range in the database (excluding the case where it is equal to the maximum and minimum values ​​of the historical fluorescence signal interference score); if so, draw the relationship curve diagram according to the obtained fluorescence intensity; otherwise, do not draw the relationship curve diagram and prompt the preset personnel to inspect the fluorescence analyzer, and re-measure the samples according to the inspected fluorescence analyzer until the re-obtained fluorescence signal interference score is within the fluorescence signal interference threshold range in the database.

[0061] It should be noted that the specific drawing process of the relationship curve diagram is as follows: under the same sample measurement conditions as the sample disc to be tested, the fluorescence intensity of the known sample disc to be tested is measured to obtain the standard fluorescence intensity, wherein the known sample disc to be tested is an ammonium phosphate compound fertilizer sample with a known phosphorus content; the known phosphorus content in the known sample disc to be tested and the corresponding standard fluorescence intensity are input into the spreadsheet software to generate a relationship curve diagram, which is a smooth curve with the horizontal axis being the phosphorus content and the vertical axis being the fluorescence intensity.

[0062] In this embodiment, by drawing a relationship curve diagram, this example can more accurately determine the content of phosphorus in the sample to be tested, thereby improving the accuracy of phosphorus content detection. Secondly, the relationship curve diagram in this example can be used to compare the fluorescence intensity differences between phosphorus elements in different sample wafers to be tested, thereby predicting their phosphorus content, thereby achieving stability and reliability of the phosphorus content detection results.

[0063] Furthermore, the stability evaluation value is obtained by the following method: when the obtained fluorescence signal interference score is within the fluorescence signal interference threshold range in the database, the salt element concentration in the sample wafer to be tested is monitored in real time to determine whether the salt element concentration is within the allowable range of the salt concentration in the database (excluding the case where the salt element concentration is equal to the maximum and minimum values ​​of the historical salt element concentration). If so, the salt element concentration score is obtained, otherwise the preset personnel is prompted to dilute the salt in the sample wafer to be tested until the salt element concentration in the sample wafer to be tested is within the allowable range of the salt concentration in the database; the signal-to-noise ratio of the fluorescence analyzer corresponding to the fluorescence signal generated by the phosphorus element in the sample wafer to be tested is monitored in real time, and the stability evaluation value is obtained by combining the obtained salt element concentration score and the fluorescence signal interference score.

[0064] Among them, the salt element concentration is measured by a salinity detector, which usually indicates the concentration of the salt element in the sample disc to be tested when the phosphorus element in the sample disc to be tested generates a fluorescence signal; the salt element concentration score is obtained by the salt element concentration and the reference salt element concentration in the database, and the reference salt element concentration is represented by the sum and average of the historical salt element concentrations in the sample disc to be tested in the database; the allowable range of salt concentration indicates the range corresponding to the maximum and minimum values ​​of the historical salt element concentrations in the sample disc to be tested in the database.

[0065] In this embodiment, the fluorescence signal interference threshold range is between 2.5 and 3.0, the allowable range of salt concentration is between 0.05 mg / L and 0.15 mg / L, and the specific limiting expression of the fluorescence signal interference threshold range stability evaluation value is:

[0066]

[0067] Wherein, e is a natural constant, WEN represents the stability evaluation value of the fluorescence intensity on the corresponding relationship curve when the phosphorus element in the sample disc to be tested generates a fluorescence signal, GAN represents the fluorescence signal interference score of the sample disc to be tested during the sample determination process, ΔGAN represents the fluorescence signal interference threshold range, Y represents the salt element concentration score in the sample disc to be tested when the phosphorus element in the sample disc to be tested generates a fluorescence signal, and Y1 0represents the reference salt element concentration, Y1 represents the salt element concentration in the sample disc to be tested corresponding to the fluorescence signal generated by the phosphorus element in the sample disc to be tested, SNR represents the signal-to-noise ratio of the fluorescence analyzer corresponding to the fluorescence signal generated by the phosphorus element in the sample disc to be tested, and ΔY1 represents the allowable range of salt concentration.

[0068] When the signal-to-noise ratio is a fixed value of 0.75, such as Figure 3 As shown, it is a two-dimensional coordinate diagram of the salt element concentration fraction-stability evaluation value provided in the embodiment of the present application. At this time, the fluorescence signal interference fraction is a fixed value of 1.0. Figure 3 It can be seen that the stability evaluation value increases with the increase of salt element concentration fraction and signal-to-noise ratio; Figure 4 As shown, it is a two-dimensional coordinate diagram of the fluorescence signal interference score-stability evaluation value provided in the embodiment of the present application. At this time, the salt element concentration score is a fixed value of 0.5. Figure 4 It can be seen that the stability evaluation value decreases with the increase of the fluorescence signal interference score, among which the salt element concentration score increases with the increase of the salt element concentration.

[0069] It should be noted that the fluorescence signal interference score also indirectly affects the value of the signal-to-noise ratio. When the fluorescence signal interference score increases, this may be due to the increase in the background fluorescence content in the sample disc to be tested. These increased background fluorescence will be superimposed on the true fluorescence signal as a noise component, thereby reducing the signal-to-noise ratio.

[0070] The concentration fraction of salt elements also indirectly affects the value of the fluorescence signal interference fraction. The salt elements in the sample wafer to be tested usually interfere with the measurement of the fluorescence signal by absorbing or scattering fluorescence photons. When the concentration of salt elements increases, the interference to the fluorescence signal will also increase, resulting in an increase in the fluorescence signal interference fraction.

[0071] By considering the above-mentioned indirect influence mechanism, it is helpful to ensure more accurate and clearer feedback of the phosphorus content in the sample disc to be tested, thereby improving the stability and accuracy of the phosphorus content detection, thereby achieving an improvement in the reliability of the fluorescence analysis detection results of the phosphorus content in ammonium phosphate compound fertilizer, and effectively solving the problem of low correlation between phosphorus content and fluorescence intensity in the fluorescence analysis detection process of ammonium phosphate compound fertilizer in the prior art.

[0072] Furthermore, the specific process of determining whether to obtain the phosphorus content based on the obtained stability evaluation value is as follows: determining whether the obtained stability evaluation value is within the stability evaluation threshold range in the database: if the obtained stability evaluation value is within the stability evaluation threshold range in the database (including the case where it is equal to the maximum and minimum values ​​of the historical stability evaluation values), it indicates that the drawn relationship curve diagram meets the expected requirements and the phosphorus content in the sample wafer to be tested is obtained according to the drawn relationship curve diagram; if the obtained stability evaluation value is not within the stability evaluation threshold range in the database, it indicates that the drawn relationship curve diagram does not meet the expected requirements, at which time the relationship curve diagram is redrawn and the stability evaluation value is reacquired until the reacquired stability evaluation value is within the stability evaluation threshold range in the database.

[0073] In this embodiment, the stability assessment threshold range represents the range corresponding to the maximum and minimum values ​​of the historical stability assessment values ​​of the relationship curve diagram in the database in each historical time period; the step of obtaining the phosphorus content is: inputting the fluorescence intensity of the phosphorus element in the sample disc to be tested obtained by real-time monitoring into the relationship curve diagram for fitting, and the value of the phosphorus content corresponding to the fluorescence intensity is the phosphorus content in the sample disc to be tested. It should be noted that the fitting can be performed by electronic spreadsheet software, and the fitting restriction conditions are: the obtained pre-detection compliance index is less than the maximum allowable pre-detection compliance index in the database, the obtained fluorescence signal interference score is within the fluorescence signal interference threshold range in the database, and the obtained stability assessment value is within the stability assessment threshold range in the database, thereby improving the accuracy and reliability of obtaining the phosphorus content.

[0074] Furthermore, the specific process of comparing the obtained phosphorus content with the expected phosphorus content to determine whether the fluorescence analysis test is completed is as follows: obtaining the phosphorus content deviation and determining whether the obtained phosphorus content deviation is less than the allowable deviation of the phosphorus content in the database (excluding the case where the deviation is equal to the maximum and minimum values ​​of the historical phosphorus content): if the obtained phosphorus content deviation is less than the allowable deviation of the phosphorus content in the database, it indicates that the result of the fluorescence analysis test meets the expected requirements and the corresponding sample wafer to be tested is marked as having completed the fluorescence analysis test; if the obtained phosphorus content deviation is not less than the allowable deviation of the phosphorus content in the database, it indicates that the result of the fluorescence analysis test does not meet the expected requirements and the corresponding sample wafer to be tested is marked as having not completed the fluorescence analysis test, at which time the sample wafer to be tested is reselected and the phosphorus content is reobtained until the obtained phosphorus content deviation is less than the allowable deviation of the phosphorus content in the database.

[0075] In this embodiment, the expected phosphorus content is set by a preset person, and is usually represented by the result of summing and averaging the historical phosphorus contents of the sample wafers to be tested in the database during the fluorescence analysis detection process. The allowable deviation of the phosphorus content represents the range corresponding to the maximum and minimum values ​​of the historical phosphorus contents of the sample wafers to be tested in the database during the fluorescence analysis detection process. By comparing the actually measured phosphorus content with the expected phosphorus content, this example can promptly discover and correct deviations to ensure the accuracy of the fluorescence analysis detection results. By marking completed and unfinished sample wafers to be tested, the detection process can be managed in an orderly manner to avoid repeated or missed detections, which helps to ensure the accuracy and reliability of the fluorescence analysis detection results and achieves improved timeliness and stability of fluorescence analysis detection.

[0076] To summarize, the embodiment of the present application determines whether to perform sample measurement through the obtained pre-detection compliance index, then determines whether to draw a relationship curve diagram based on the obtained fluorescence signal interference score, and finally determines whether to obtain the phosphorus content based on the obtained stability evaluation value. If the phosphorus content is obtained, the result of the fluorescence analysis test is used to generate a fluorescence analysis test report, thereby achieving an improvement in the accuracy of the fluorescence analysis test, and further achieving an improvement in the reliability of the fluorescence analysis test results of the phosphorus content in ammonium phosphate compound fertilizer, effectively solving the problem of low correlation between the phosphorus content and the fluorescence intensity in the fluorescence analysis test process of ammonium phosphate compound fertilizer in the prior art.

[0077] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0078] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0079] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0080] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0081] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0082] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fluorescence analysis detection method for phosphorus content in ammonium phosphate compound fertilizer, characterized in that: The following steps are involved: Step 1, comparing the actual operation data of the fluorescence analyzer during the pre-detection process of the sample wafer to be tested with the reference set data to obtain a pre-detection compliance index, wherein the pre-detection compliance index is used to evaluate the degree of match between the actual operation data of the fluorescence analyzer within a preset time period and the reference set data; Step 2: judging whether to perform sample determination based on the obtained pre-detection compliance index; if the sample determination is performed, monitoring the fluorescence intensity of the phosphorus element in the sample wafer to be tested in real time and obtaining a fluorescence signal interference score according to the fluctuation of the fluorescence intensity of the phosphorus element, wherein the fluorescence signal interference score is used to evaluate the interference degree of the fluorescence signal waveform emitted by the phosphorus element in the sample wafer to be tested; Step 3: determine whether to draw a relationship curve diagram based on the obtained fluorescence signal interference score. If so, obtain a stability evaluation value based on the change of the fluorescence intensity on the relationship curve diagram, and determine whether to obtain the phosphorus content based on the obtained stability evaluation value. The stability evaluation value is used to evaluate the stability of the relationship curve diagram during the drawing process; Step 4: If the phosphorus content is obtained, the obtained phosphorus content is compared with the expected phosphorus content to determine whether the fluorescence analysis test is completed and generate a fluorescence analysis test report.

2. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The sample disc to be tested is an ammonium phosphate compound fertilizer sample that has been crushed, ground and tableted; The pre-test is used to evaluate whether the actual working state of the fluorescence analyzer and the fluorescence analysis test conditions meet the requirements; The actual operation data includes the actual excitation wavelength, the actual emission wavelength and the actual integration time; The reference setting data includes a reference excitation wavelength, a reference emission wavelength and a reference integration time; The sample determination is used to excite the phosphorus element in the sample wafer to be tested; The relationship curve diagram is used to visualize the relationship between the fluorescence intensity of phosphorus element and the phosphorus element content in the sample disc to be tested; The fluorescence analysis test report includes the sample wafer information to be tested, the fluorescence analysis test time and the fluorescence analysis test result.

3. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The pre-detection coincidence index is obtained by processing the excitation wavelength score, the emission wavelength score and the integration time score; The excitation wavelength score is the ratio of the absolute value of the difference between the actual excitation wavelength and the reference excitation wavelength to the reference excitation wavelength; The emission wavelength fraction is the ratio of the absolute value of the difference between the actual emission wavelength and the reference emission wavelength to the reference emission wavelength; The integration duration score is the ratio of the absolute value of the difference between the actual integration duration and the reference integration duration to the reference integration duration.

4. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The specific process of judging whether to perform sample measurement based on the obtained pre-detection compliance index is as follows: Determine whether the obtained pre-test compliance index is less than the maximum allowable pre-test compliance index in the database, if so, perform sample measurement, otherwise do not perform sample measurement and re-perform pre-test; The specific process of the sample determination is as follows: After the fluorescence analyzer emits laser light, the fluorescence signal emitted by the sample disc to be tested is collected by the detector of the fluorescence analyzer to obtain the phosphorus content information. The laser emission means that the fluorescence analyzer emits excitation light to the sample disc to be tested. The phosphorus content information includes the absolute content, relative content and concentration of phosphorus.

5. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The specific steps for obtaining the fluorescence signal interference score are: L1, determine whether the content of the phosphorus element to be measured and the concentration are linearly related during the sample determination process. If so, execute L2, otherwise prompt the preset personnel to reduce the content of the fluorescence quencher and re-determine the sample; L2, real-time monitoring of the spectral line overlap deviation of the phosphorus element to be measured during the sample determination process, judging whether the spectral line overlap deviation is not greater than the spectral line overlap deviation preset in the database, if so, executing L3, otherwise adjusting the fluorescence spectrum wavelength parameter and re-obtaining the spectral line overlap deviation of the phosphorus element to be measured; L3, obtaining the spectral line overlap score, and at the same time measuring the total amount of scattered light in real time and combining it with the total amount of fluorescence signal of the phosphorus element to be measured to obtain the scattered light interference score, and obtaining the fluorescence signal interference score by processing the obtained pre-detection coincidence index and spectral line overlap score; The spectral line overlap deviation is the length difference between the longest spectral line wavelength of the fluorescence spectral line wavelength of the phosphorus element to be measured and other spectral line wavelengths; The fluorescence spectrum wavelength parameters include slit width and wavelength response range; The spectral line overlap score is the ratio of the spectral line overlap deviation to the spectral line overlap deviation preset in the database; The scattered light interference fraction is the ratio of the total amount of scattered light to the total amount of fluorescent signal of the phosphorus element to be measured.

6. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 5, characterized in that: The specific limiting expression of the fluorescence signal interference fraction is: In the formula, e is a natural constant, GAN represents the fluorescence signal interference score of the sample disc to be tested during the sample determination process, YU represents the pre-detection compliance index of the fluorescence analyzer during the pre-detection process, and YU max represents the maximum allowable pre-detection compliance index, Q represents the scattered light interference fraction of the sample disc to be tested during the sample measurement process, ΔP represents the spectral line overlap fraction of the sample disc to be tested during the sample measurement process, ΔP1 represents the spectral line overlap deviation of the sample disc to be tested during the sample measurement process, and ΔP10 represents the preset spectral line overlap deviation.

7. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The specific process of determining whether to draw a relationship curve diagram based on the obtained fluorescence signal interference score is as follows: Determine whether the obtained fluorescence signal interference score is within the fluorescence signal interference threshold range in the database. If so, draw a relationship curve diagram according to the obtained fluorescence intensity. Otherwise, do not draw the relationship curve diagram and prompt the preset personnel to inspect the fluorescence analyzer. The specific drawing process of the relationship curve diagram is as follows: Under the same sample measurement conditions as the sample disc to be tested, the fluorescence intensity of the known sample disc to be tested is measured to obtain a standard fluorescence intensity, wherein the known sample disc to be tested is an ammonium phosphate compound fertilizer sample with a known phosphorus content; The known phosphorus content in the sample disc to be tested and the corresponding standard fluorescence intensity are input into the spreadsheet software to generate a relationship curve graph.

8. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The stability evaluation value is obtained by the following method: Real-time monitoring of the salt element concentration in the sample wafer to be tested, and judging whether the salt element concentration is within the allowable salt concentration range in the database. If so, obtaining the salt element concentration score; otherwise, prompting the preset personnel to dilute the salt in the sample wafer to be tested; Real-time monitoring of the signal-to-noise ratio of the fluorescence analyzer corresponding to the fluorescence signal generated by the phosphorus element in the sample wafer to be tested, and the stability evaluation value is obtained by combining the obtained salt element concentration score and the fluorescence signal interference score; The salt element concentration score is obtained by comparing the salt element concentration with the reference salt element concentration in the database.

9. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The specific process of determining whether to obtain the phosphorus content based on the obtained stability evaluation value is as follows: Determine whether the obtained stability assessment value is within the stability assessment threshold range in the database: If the obtained stability evaluation value is within the stability evaluation threshold range in the database, the phosphorus content in the sample disc to be tested is obtained according to the drawn relationship curve diagram; If the obtained stability evaluation value is not within the stability evaluation threshold range in the database, the relationship curve graph is redrawn and the stability evaluation value is reobtained.

10. A fluorescence analysis detection method based on the phosphorus content in ammonium phosphate compound fertilizer as claimed in claim 1, characterized in that: The specific process of comparing the obtained phosphorus content with the expected phosphorus content to determine whether the fluorescence analysis detection is completed is: Obtain the phosphorus content deviation and determine whether the obtained phosphorus content deviation is less than the allowable deviation of the phosphorus content in the database: If the obtained phosphorus content deviation is less than the allowable deviation of the phosphorus content in the database, the corresponding sample disc to be tested is marked as having completed the fluorescence analysis test; If the obtained phosphorus content deviation is not less than the allowable deviation of the phosphorus content in the database, the corresponding sample disc to be tested is marked as incomplete fluorescence analysis detection; The phosphorus content deviation is the absolute value of the difference between the phosphorus content and the expected phosphorus content.

Images