Method for rapidly determining content of sodium acetate in industrial-grade sodium acetate solution

Abstract

The invention discloses a method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution. The method comprises the following specific steps: S1, generating a calibration value curve; s2, preparing a sodium acetate solution sample; s3, measuring by a conductivity method; s4, error metering; the step S4 comprises the following specific steps: S41, calculating a predicted content numerical value; s42, matching a conductivity value; s43, calculating a conductivity value difference; s44, calculating a conductivity difference average value; s45, calculating a conductivity measurement value: adding the difference average value and the conductivity measurement value of the sample A in the step S3 to obtain the conductivity measurement value of the sample A; and S46, final content calculation: matching the conductivity to-be-measured value obtained in the step S45 into the calibration value curve to obtain the sodium acetate content value in the sodium acetate solution, and the method for rapidly determining the sodium acetate content in the industrial-grade sodium acetate solution disclosed by the invention has the effect of reducing the influence of the environment on the measurement of the value.

Description

Technical Field

[0001] The invention relates to the technical field of sodium acetate content determination, and in particular to a method for quickly determining the sodium acetate content in an industrial-grade sodium acetate solution. Background Art

[0002] Sodium acetate, as a chemical preparation, has been widely used in various fields such as textiles and wastewater treatment. Enterprises often need to purchase industrial-grade sodium acetate solution from the market for use. However, there are requirements for the content of sodium acetate in the purchased sodium acetate solution, so it is necessary to measure the sodium acetate content of the purchased sodium acetate solution.

[0003] Application No. 202110655057.5 discloses a method for quickly determining the content of sodium acetate in an industrial-grade sodium acetate solution, substituting the corrected absorbance into the standard curve fitting equation, and calculating to obtain the sodium acetate concentration of the sample solution. However, before measuring the sodium acetate content, during the storage of the sodium acetate solution, as the storage time increases and the environment changes, the subsequent measurement results of the sodium acetate content will be affected. In this invention, the process of obtaining the sodium acetate concentration is only carried out by matching the absorbance into the standard curve, and the impact of the environment on the test results is not taken into account, resulting in a certain impact on the accuracy of the measurement results. Summary of the invention

[0004] The invention discloses a method for quickly determining the content of sodium acetate in an industrial-grade sodium acetate solution, aiming to solve the technical problem that the influence of the environment on the detection result is not taken into account during the calculation process, resulting in a certain influence on the accuracy of the measurement result.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution comprises the following specific steps: S1: generating a calibration value curve: measuring a plurality of sodium acetate standard solutions with different concentrations based on a conductivity method, and drawing a calibration value curve with conductivity as an X-axis and solution content as a Y-axis; S2: preparing a sodium acetate solution sample; S3: measuring by conductivity method: measuring the conductivity values ​​of a plurality of sodium acetate solution samples and the corresponding sodium acetate contents based on the conductivity of ions in the solution using the conductivity method; S4: measuring the error: measuring the error between the measured value and the actual value to obtain a final content value;

[0007] The S2 comprises the following specific steps: S21: preparing sodium acetate solution for standby: preparing a sodium acetate solution sample to be tested; S22: dividing the sodium acetate solution: dividing the prepared sodium acetate solution to be tested into a plurality of sodium acetate solution samples; S23: quantitatively adding sodium acetate: retaining a single sodium acetate solution sample as sample A, and quantitatively adding sodium acetate to the remaining equally divided sodium acetate solution samples;

[0008] The S4 comprises the following specific steps: S41: Calculation of expected content values: Calculation of expected content values ​​of multiple samples based on the fixed addition amount of sodium acetate solution samples of multiple samples and the sodium acetate content measured by sample A; S42: Matching conductivity values: Matching the calculated expected content values ​​of multiple samples to the calibration value curve to obtain the corresponding conductivity values ​​in the calibration value curve; S43: Calculation of conductivity value difference: Matching the conductivity value obtained in S42 with the conductivity value measured in S3 to calculate the difference between the two; S44: Calculation of conductivity difference average value: Calculation of the average value of conductivity value difference in different samples;

[0009] S45: Calculation of the conductivity value to be measured: Add the average difference value to the conductivity measurement value of sample A in S3 to obtain the conductivity value to be measured of sample A; S46: Calculation of final content: Match the conductivity value to be measured obtained in S45 to the calibration value curve to obtain the sodium acetate content value in the sodium acetate solution.

[0010] By using the generated calibration value curve as a comparison object, when calculating the content of the sodium acetate solution, based on the content of multiple samples as fixed values, the content values ​​of multiple samples can be calculated more quickly based on the addition amount and the measured capacity of sample A. The content value is matched with the calibration value curve to obtain the corresponding conductivity value. Further, the calculated multiple differences are added and the average value is calculated. The value is added to the conductivity measurement result of sample A, and then matched with the calibration value curve to obtain a more accurate capacity value based on the calibration value curve. Under this process, only the measurement result of a single sample needs to be calculated, and subsequent multiple samples only need to measure the conductivity and compare the values, thereby shortening the calculation process from conductivity value to capacity value. While optimizing the calculation efficiency to a certain extent, it can also improve the calculation accuracy of the value and reduce the impact of the environment on the measurement value of the sodium acetate solution.

[0011] In a preferred embodiment, in S23, sodium acetate is added in equal amounts to the other equally divided sodium acetate solution samples except sample A;

[0012] In S23, sodium acetate is added to the sodium acetate solution sample by quantitative dropwise addition, and the addition is performed during the storage of sample A;

[0013] The S3 comprises the following specific steps: S31: placing in a conductivity meter: placing the retained sodium acetate solution sample A in the conductivity meter; S32: measuring the conductivity value: recording the solution conductivity value measured by the conductivity measurement; S33: calculating the capacity value: calculating the capacity based on the conductivity value of sample A; S34: repeating the measurement: repeating steps S31 and S32 to measure the solution conductivity values ​​of multiple samples to which the sodium peracetate solution is quantitatively added;

[0014] The S1 comprises the following specific steps: S11: measuring sodium acetate standard working solution: measuring a plurality of sodium acetate standard working solutions of different concentrations respectively; S12: adding a stabilizer: adding the sodium acetate standard working solution to the stabilizer and mixing evenly; S13: measuring conductivity: placing sodium acetate standard working solutions of different concentrations into a conductivity meter to measure the conductivity; S14: calculating the sodium acetate content: calculating the sodium acetate content based on the conductivity of sodium acetate of different concentrations; S15: drawing a calibration value curve: drawing a calibration value curve based on the conductivity of the sodium acetate solution and the sodium acetate content.

[0015] By setting up a calibration value curve, measuring and calculating by measuring a plurality of sodium acetate standard solutions of different concentrations, and making a calibration value curve based on the measurement and calculation results, when performing subsequent sample measurements, since the calibration value curve is standard data, after matching and calculating with the subsequent measurement data, it can be used as standard data to optimize the accuracy of the sodium acetate solution content measurement, and can also be directly compared with the subsequent measurement results, without measuring the calibration value multiple times, thereby optimizing the measurement efficiency to a certain extent.

[0016] In a preferred embodiment, in S23, the number of samples to which sodium acetate needs to be quantitatively added matches the content range of the sodium acetate solution;

[0017] In the S23, the content of the sodium acetate solution is specifically divided into intervals, with the content of 5%-25% being divided into the first class, the content of 25%-30% being divided into the second class, the content of 30%-35% being divided into the third class, and the content higher than 35% being divided into the fourth class;

[0018] Correspondingly, the number of sodium acetate solution samples participating in the conductivity value difference calculation in S44 is equal to the number of samples added in S23.

[0019] By dividing the intervals in advance according to the approximate content of the sodium acetate solution, since the higher the content of the sodium acetate solution, the greater the probability that it will be affected during the storage process, and the greater the impact on the measured value, the content is divided into intervals in advance, and the number of other sodium acetate solution samples participating in the calculation can be controlled, that is, the higher the content, the more samples participate in the calculation, and the average value calculated with more samples can better reduce the impact of the environment on the content measurement, thereby optimizing the measurement accuracy.

[0020] As can be seen from the above, a method for quickly determining the content of sodium acetate in an industrial-grade sodium acetate solution comprises the following specific steps: S1: generating a calibration value curve: measuring a plurality of sodium acetate standard solutions of different concentrations based on the conductivity method, and drawing a calibration value curve with conductivity as the X-axis and solution content as the Y-axis; S2: preparing a sodium acetate solution sample; S3: measuring by conductivity method: measuring the conductivity values ​​and corresponding sodium acetate contents of a plurality of sodium acetate solution samples based on the conductivity of ions in the solution by the conductivity method; S4: measuring the error: measuring the error between the measured value and the actual value to obtain the final content value; the S2 comprises the following specific steps: S21: preparing a sodium acetate solution for standby use: preparing a sodium acetate solution sample to be tested; S22: dividing a sodium acetate solution sample: dividing the prepared sodium acetate solution to be tested into a plurality of sodium acetate solution samples; S23: quantitative addition of sodium acetate: retaining a single sodium acetate solution sample as sample A, and quantitatively adding sodium acetate to the remaining equally divided sodium acetate solution samples. Add sodium acetate; the S4 comprises the following specific steps: S41: Calculation of expected content value: Calculation of expected content value of multiple samples based on the fixed addition amount of sodium acetate solution samples of multiple samples and the sodium acetate content measured by sample A; S42: Matching conductivity value: Matching the calculated expected content values ​​of multiple samples to the calibration value curve to obtain the corresponding conductivity value in the calibration value curve; S43: Calculation of conductivity value difference: Matching the conductivity value obtained in S42 with the conductivity value measured in S3 to calculate the difference between the two; S44: Calculation of conductivity difference average value: Calculation of the average value of conductivity value difference in different samples; S45: Calculation of conductivity value to be measured: Adding the difference average value to the conductivity measurement value of sample A in S3 to obtain the conductivity value to be measured of sample A; S46: Final content calculation: Matching the conductivity value to be measured obtained in S45 to the calibration value curve to obtain the sodium acetate content value in the sodium acetate solution. The method for quickly determining the content of sodium acetate in an industrial-grade sodium acetate solution provided by the present invention has the technical effects of improving the calculation accuracy of numerical values ​​and reducing the influence of the environment on the measurement of numerical values. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention provides an overall flow chart of a method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution.

[0022] Figure 2 The present invention provides a flow chart for generating a calibration value curve for a method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution.

[0023] Figure 3 The present invention provides a flow chart of a sodium acetate solution sample preparation method for rapidly determining the sodium acetate content in an industrial-grade sodium acetate solution.

[0024] Figure 4 The present invention provides a conductivity measurement flow chart of a method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution.

[0025] Figure 5 The present invention provides an error calculation flow chart of a method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] The invention discloses a method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution, which is mainly applied to the scenario of measuring the content of sodium acetate.

[0028] Reference Figure 1-Figure 2 A method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution comprises the following specific steps:

[0029] S1: Calibration value curve generation: measure a plurality of sodium acetate standard solutions of different concentrations based on the conductivity method, and draw a calibration value curve with conductivity as the X-axis and solution content as the Y-axis;

[0030] S2: sodium acetate solution sample preparation;

[0031] S3: Conductivity method measurement: The conductivity values ​​of multiple sodium acetate solution samples and the corresponding sodium acetate contents are measured using the conductivity method based on the conductivity of ions in the solution;

[0032] S4: Error measurement: Measure the error between the measured value and the actual value to obtain the final content value;

[0033] S2 includes the following specific steps:

[0034] S21: prepare sodium acetate solution for standby use: prepare a sodium acetate solution sample to be tested;

[0035] S22: Sodium acetate solution sampling: dividing the prepared sodium acetate solution to be tested into a plurality of sodium acetate solution samples;

[0036] S23: quantitative addition of sodium acetate: retain a single sodium acetate solution sample as sample A, and quantitatively add sodium acetate to the remaining equally divided sodium acetate solution samples;

[0037] S4 includes the following specific steps:

[0038] S41: Calculation of estimated content values: Calculating estimated content values ​​of multiple samples based on fixed addition amounts of sodium acetate solution samples of multiple samples and the sodium acetate content measured in sample A;

[0039] S42: Matching conductivity values: matching the calculated estimated content values ​​of the multiple samples to the calibration value curve to obtain corresponding conductivity values ​​in the calibration value curve;

[0040] S43: Calculate the conductivity value difference: match the conductivity value obtained in S42 with the conductivity value measured in S3, and calculate the difference between the two;

[0041] S44: Calculate the average value of conductivity difference: calculate the average value of conductivity value difference in different samples;

[0042] S45: Calculation of the conductivity value to be measured: Add the average value of the difference to the conductivity measurement value of sample A in S3 to obtain the conductivity value to be measured of sample A;

[0043] S46: Final content calculation: Match the conductivity value obtained in S45 to the calibration value curve to obtain the sodium acetate content value in the sodium acetate solution; when calculating the content of the sodium acetate solution, measure and calculate the conductivity value of the solution sample A based on the conductivity method, and then measure the conductivity of other samples with equal amounts of sodium acetate added based on the content of multiple samples as fixed values. Based on the addition amount and the measurement capacity of sample A, the content values ​​of multiple samples can be calculated more quickly, and the content value is matched with the calibration value curve to obtain the corresponding conductivity value. Since the content value of the sodium acetate solution will be affected after storage, the conductivity value obtained at this time is different from the measured value. There are certain differences in the conductivity values ​​of multiple samples. Further, the calculated multiple differences are added and the average value is calculated. The average value is used as the difference value between the calibration value and the measured value, which is more accurate. Therefore, the value is added to the conductivity measurement result of sample A, and then matched with the calibration value curve to obtain a more accurate capacity value based on the calibration value curve. Under this process, only the measurement result of a single sample needs to be calculated, and subsequent multiple samples only need to measure the conductivity and compare the values, thereby shortening the calculation process from conductivity value to capacity value. While optimizing the calculation efficiency to a certain extent, it can also improve the calculation accuracy of the values ​​and reduce the impact of the environment on the measurement value of the sodium acetate solution.

[0044] Reference Figure 3 In a preferred embodiment, in S23, sodium acetate is added in equal and increasing amounts to the other equally divided sodium acetate solution samples except sample A.

[0045] Reference Figure 3In a preferred embodiment, in S23, sodium acetate is added to the sodium acetate solution sample by quantitative dropwise addition, and this is performed during the storage of sample A.

[0046] Reference Figure 4 In a preferred embodiment, S3 includes the following specific steps:

[0047] S31: placing in a conductivity meter: placing the retained sodium acetate solution sample A in the conductivity meter;

[0048] S32: Determine the conductivity value: record the solution conductivity value measured by the conductivity measurement;

[0049] S33: Calculate the capacity value: Calculate the capacity based on the conductivity value of sample A;

[0050] S34: Repeat measurement: Repeat steps S31 and S32 to measure the solution conductivity values ​​of multiple samples to which sodium peracetate solution is quantitatively added.

[0051] Reference Figure 2 In a preferred embodiment, S1 includes the following specific steps:

[0052] S11: measuring sodium acetate standard working solution: measuring a plurality of sodium acetate standard working solutions of different concentrations respectively;

[0053] S12: Adding stabilizer: adding sodium acetate standard working solution to the stabilizer and mixing evenly;

[0054] S13: Conductivity measurement: placing sodium acetate standard solutions of different concentrations into a conductivity meter to measure the conductivity;

[0055] S14: Calculation of sodium acetate content: Calculate the sodium acetate content based on the conductivity of sodium acetate at different concentrations;

[0056] S15: Drawing a calibration value curve: Drawing a calibration value curve based on the conductivity and sodium acetate content of the sodium acetate solution, measuring and calculating by measuring a plurality of sodium acetate standard working solutions of different concentrations, and making a calibration value curve based on the measurement and calculation results. Therefore, when performing subsequent sample measurements, since the calibration value curve is standard data, after matching and calculating with subsequent measurement data, it can be used as standard data to optimize the accuracy of sodium acetate solution content measurement. At the same time, it can also be directly compared with subsequent measurement results without measuring the calibration value multiple times, thereby optimizing the measurement efficiency to a certain extent.

[0057] Reference Figure 3 In a preferred embodiment, in S23, the number of samples to which sodium acetate needs to be quantitatively added matches the content range of the sodium acetate solution.

[0058] Reference Figure 3 In a preferred embodiment, in S23, the content of the sodium acetate solution is specifically divided into intervals, with a content of 5%-25% being divided into the first class, a content of 25%-30% being divided into the second class, a content of 30%-35% being divided into the third class, and a content higher than 35% being divided into the fourth class.

[0059] Reference Figure 5 In a preferred embodiment, correspondingly, the number of sodium acetate solution samples participating in the conductivity value difference calculation in S44 is equal to the number of samples added in S23. By performing advance interval division based on the approximate content of the sodium acetate solution, since the higher the content of the sodium acetate solution, the greater the probability that it will be affected during the storage process, and the greater the impact on the measured value, the content is divided into intervals in advance, and the number of other sodium acetate solution samples participating in the calculation can be controlled, that is, the higher the content, the more samples are involved in the calculation, and the average value calculated with more sample numbers can better reduce the impact of the environment on the content measurement, thereby optimizing the measurement accuracy.

[0060] Working principle: When calculating the content of sodium acetate solution, the conductivity value of the solution sample A is measured and calculated based on the conductivity method. Based on the content of sample A, the conductivity of other samples with equal amounts of sodium acetate added is measured. The contents of multiple samples are fixed values. The content values ​​of multiple samples can be calculated more quickly based on the addition amount and the measurement capacity of sample A. The content value is matched with the calibration value curve to obtain the corresponding conductivity value. Since the content value of the sodium acetate solution will be affected after storage, there is a certain amount of difference between the conductivity value obtained and the conductivity values ​​of multiple samples measured at this time. Further , add up the multiple calculated differences and calculate the average value, and use the average value as the difference value between the calibration value and the measured value for greater accuracy. Therefore, add the value to the conductivity measurement result of sample A, and then match it with the calibration value curve to obtain a more accurate capacity value based on the calibration value curve. Under this process, only the measurement result of a single sample needs to be calculated, and subsequent multiple samples only need to perform conductivity measurement and value comparison, thereby shortening the calculation process from conductivity value to capacity value, while optimizing the calculation efficiency to a certain extent, it can also improve the calculation accuracy of the value and reduce the impact of the environment on the measurement value of the sodium acetate solution.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution, characterized in that: The specific steps include: S1: Calibration value curve generation: measure a plurality of sodium acetate standard solutions of different concentrations based on the conductivity method, and draw a calibration value curve with conductivity as the X-axis and solution content as the Y-axis; S2: sodium acetate solution sample preparation; S3: Conductivity method measurement: The conductivity values ​​of multiple sodium acetate solution samples and the corresponding sodium acetate contents are measured using the conductivity method based on the conductivity of ions in the solution; S4: Error measurement: Measure the error between the measured value and the actual value to obtain the final content value; The S2 comprises the following specific steps: S21: prepare sodium acetate solution for standby use: prepare a sodium acetate solution sample to be tested; S22: Sodium acetate solution sampling: dividing the prepared sodium acetate solution to be tested into a plurality of sodium acetate solution samples; S23: quantitative addition of sodium acetate: retain a single sodium acetate solution sample as sample A, and quantitatively add sodium acetate to the remaining equally divided sodium acetate solution samples; The S4 comprises the following specific steps: S41: Calculation of expected content values: Calculating expected content values ​​of the multiple samples based on the fixed addition amount of the sodium acetate solution samples of the multiple samples and the sodium acetate content measured by sample A; S42: Matching conductivity values: matching the calculated estimated content values ​​of the multiple samples to the calibration value curve to obtain corresponding conductivity values ​​in the calibration value curve; S43: Calculate the conductivity value difference: match the conductivity value obtained in S42 with the conductivity value measured in S3, and calculate the difference between the two; S44: Calculate the average value of conductivity difference: calculate the average value of conductivity value difference in different samples; S45: Calculation of the conductivity value to be measured: Add the average value of the difference to the conductivity measurement value of sample A in S3 to obtain the conductivity value to be measured of sample A; S46: Final content calculation: Match the conductivity value obtained in S45 to the calibration value curve to obtain the sodium acetate content value in the sodium acetate solution.

2. A method for rapidly determining sodium acetate content in an industrial grade sodium acetate solution according to claim 1, characterized in that: In S23, sodium acetate is added in equal and increasing amounts to the other equally divided sodium acetate solution samples except sample A.

3. A method for rapidly determining sodium acetate content in an industrial grade sodium acetate solution according to claim 2, characterized in that: In S23, sodium acetate is added to the sodium acetate solution sample by quantitative dropwise addition, and this is performed during the storage of sample A.

4. A method for rapidly determining sodium acetate content in an industrial grade sodium acetate solution according to claim 1, characterized in that: The S3 includes the following specific steps: S31: placing in a conductivity meter: placing the retained sodium acetate solution sample A in the conductivity meter; S32: Determine the conductivity value: record the solution conductivity value measured by the conductivity measurement; S33: Calculate the capacity value: Calculate the capacity based on the conductivity value of sample A; S34: Repeat measurement: Repeat steps S31 and S32 to measure the solution conductivity values ​​of multiple samples to which sodium peracetate solution is quantitatively added.

5. A method for rapidly determining the content of sodium acetate in an industrial grade sodium acetate solution according to claim 1, characterized in that: The S1 comprises the following specific steps: S11: measuring sodium acetate standard working solution: measuring a plurality of sodium acetate standard working solutions of different concentrations respectively; S12: Adding stabilizer: adding sodium acetate standard working solution to the stabilizer and mixing evenly; S13: Conductivity measurement: placing sodium acetate standard solutions of different concentrations into a conductivity meter to measure the conductivity; S14: Calculation of sodium acetate content: Calculate the sodium acetate content based on the conductivity of sodium acetate at different concentrations; S15: Drawing a calibration value curve: drawing a calibration value curve based on the conductivity of the sodium acetate solution and the sodium acetate content.

6. A method for rapidly determining the content of sodium acetate in an industrial grade sodium acetate solution according to claim 1, characterized in that: In S23, the number of samples to which sodium acetate needs to be quantitatively added matches the content range of the sodium acetate solution.

7. A method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution according to claim 6, characterized in that: In the S23, the content of the sodium acetate solution is specifically divided into intervals, with a content of 5%-25% being divided into the first class, a content of 25%-30% being divided into the second class, a content of 30%-35% being divided into the third class, and a content higher than 35% being divided into the fourth class.

8. A method for rapidly determining the content of sodium acetate in an industrial-grade sodium acetate solution according to claim 7, characterized in that: Correspondingly, the number of sodium acetate solution samples participating in the conductivity value difference calculation in S44 is equal to the number of samples added in S23.

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