89 results about "Isotope analysis" patented technology

The invention discloses a plain small watershed nitrogen and phosphorus pollutant collaborative source analysis method, which belongs to the technical field of environmental pollution traceability, and comprises the following steps: 1, collecting multi-source basic data in a target plain small watershed, carrying out unified coordinate system, format and precision preprocessing, and constructing a watershed basic database; and 2, constructing a response relation model of various pollution sources and potential pollution loads on a GIS platform based on a drainage basin basic database, qualitatively identifying main pollution sources through spatial visualization analysis, and delineating key risk areas. According to the method, macroscopic spatial analysis, microchemical tracing and mathematical model calculation are organically fused, high-precision spatial data, hydrochemical and isotope analysis, multi-model quantitative analysis and uncertainty quantification are integrated, and high-precision and high-reliability cooperative source analysis of nitrogen and phosphorus pollutants is achieved.

The invention discloses an ultratrace mercury isotope analysis method, and relates to the technical field of environmental analysis. The method comprises the following steps: purging a liquid sample to be detected by nitrogen in a stannous chloride atmosphere, and trapping and concentrating mercury into a gold trapping tube; pyrolyzing the pyrolytic gold trapping tube to release mercury vapor; pyrolytic mercury vapor and thallium isotope internal standard aerosol are mixed to serve as a sample injection sample, and the sample injection sample is introduced into a multi-receiver inductively coupled plasma mass spectrometry; acquiring a mercury instantaneous signal and a thallium isotope signal; and calculating the mercury isotope ratio by adopting least square linear regression fitting in combination with a thallium internal standard ratio correction algorithm. According to the method, the instantaneous mercury isotope signal is generated by online combination of gold trapping and multi-receiver inductively coupled plasma mass spectrometry, the instantaneous signal is strategically collected and processed, the determination concentration of isotope analysis can be greatly reduced, the sensitivity of the method is remarkably improved, and direct determination of mercury isotope composition in a water sample with the concentration of 10 ng L <-1 > is met.

The invention discloses a device and a detection method for online oxidation-enrichment-reduction determination of nanogram-level nitrogen isotopes in a solid, and belongs to the technical field of nitrogen isotope analysis. The device comprises an oxidation system, a nitrogen oxide enrichment system, a nitrogen reduction system, a mass spectrum interface system, a stable isotope ratio mass spectrometer and pipelines for connecting all parts of the device. The device provided by the invention greatly reduces the quantitation limit of the nitrogen isotope in the solid sample, can realize high-precision determination of the nanogram-level nitrogen isotope in the solid sample, and has the advantages of simplicity and convenience in operation, high accuracy and the like.

The application belongs to the technical field of chemical detection, and particularly relates to a Raman-LIBS-mass spectrometry combined analysis device and analysis method. The Raman-LIBS-mass spectrometry combined analysis device comprises a multiple-reflection time-of-flight mass spectrometer, a LIBS spectrometer, a Raman spectrometer and a shared module. The shared module comprises a first incident light path system, a second incident light path system, a high-definition observation system, a vacuum sample bin, a vacuum system and a control system. The first incident light path system is used for generating a femtosecond laser beam and performing three-dimensional ablation on a sample. The second incident light path system is used for combining tunable lasers into a resonance ionization light path. Compared with the prior art, the application can realize in-situ micro-area ultra-high resolution element and isotope analysis and imaging, realize ultra-trace element, isotope analysis and isotope ratio analysis under strong matrix interference, and can also perform high-resolution molecular structure and composition analysis and Raman scattering imaging.

The present invention discloses a nitrogen isotope determination method for nitrogen in a gas sample, and relates to the technical field of isotope analysis, the method comprises: instrument performance pretreatment: before sample determination, determining that an instrument is in a stable working state by checking the vacuum degree, detecting the interference peak, tuning an ion source, and testing the stability and linearity of reference gas; according to the method, a glass sample bottle is adopted to collect a gas sample, and before collection, a bidirectional inert gas replacement-vacuumizing coupling sampling process is adopted to treat the sample bottle. Residual air in the sample bottle and air attached to the bottle wall are effectively removed, and the sample pollution risk is remarkably reduced; the CO2 adsorption trap adopts a gradient filling structure and is matched with a constant-temperature heating sleeve, so that the contact time of CO2 and an adsorption material is prolonged, meanwhile, the influence of adsorption heat release on the adsorption efficiency is avoided, and the CO2 removal rate is improved.

The present application relates to a kind of groundwater organic pollution tracing analysis method and system based on isotope, the method comprises: collecting the pollutant parameter of monitoring point in multiple time intervals;Build target monitoring point set;Its coverage area is called target area;Based on typical time interval, the pollutant parameter of each monitoring point in analysis target monitoring point set is found to obtain the contour line corresponding to pollutant parameter type;The area in the contour line of each pollutant type high pollutant parameter is regarded as suspected area;Determine target pollution source in suspected area based on isotope parameter.The present application fully utilizes big data monitoring resources from space and time, combines pollutant parameter itself and optimally uses isotope analysis resources, and the tracking of pollution source is guided to provide efficient multi-source burst differentiating pollutant tracing.

This invention discloses a quantitative method and system for the contribution of river nitrous oxide sources and fate processes, relating to the field of biotechnology. The method includes: collecting surface water and groundwater samples; determining the physicochemical properties of the water samples, including calculating and quantifying the water-to-groundwater exchange ratio; extracting dissolved nitrous oxide from the water samples after determining the physicochemical properties and performing isotope analysis on the nitrous oxide to generate isotope test results; conducting indoor culture experiments on the water samples after completing the isotope analysis to determine whether there are abiotic sources of nitrous oxide in the water samples, generating indoor culture results; and quantifying the contribution of river nitrous oxide sources based on the results of the water-to-groundwater exchange ratio, the isotope test results, and the indoor culture results. This invention effectively analyzes the sources and fate processes of nitrous oxide in rivers and accurately quantifies the contributions of different sources.

This invention relates to the field of mineral deposit exploration technology, specifically disclosing a method for determining the extension of magmatic hydrothermal deposits using fluid inclusions. The method involves collecting mineral samples containing fluid inclusions from the target deposit and its surrounding area using a systematic grid. Physicochemical parameters are obtained through petrography, microthermometry, and isotope analysis, and a spatial database is established. Multiple initial hydrothermal centers are identified. A multi-dimensional spatial constraint field is constructed, incorporating temperature-salinity-isotope gradients, mineralization depth, and magma-water mixing ratio. Using the initial centers as seed points, a neighborhood search is performed along the gradient synthesis direction. Sub-hydrothermal centers are generated and continuously grow when preset conditions are met, until an overlap threshold is reached, at which point iteration stops. All hydrothermal centers and growth paths are integrated to construct a spatial extension model. High-potential areas are screened using a target area evaluation index, and the extension direction and potential mineralization target areas are determined by combining the mineralization depth. This significantly improves the accuracy of concealed ore body prediction and the efficiency of mineral exploration.

This invention provides an apparatus, system, and method for analyzing altered carbonate carbon isotopes. The apparatus includes: an enrichment component comprising at least one enrichment tube having an enrichment section; and a freezing component comprising a container filled with a refrigerant. The enrichment section is completely immersed in the refrigerant to freeze the target gas generated by sample decomposition within the enrichment section to a target concentration. Based on the technical solution of this invention, analysis of low-content altered carbonate carbon isotopes can be achieved; it can also simultaneously acquire multiple sets of samples required for altered carbonate carbon isotope analysis, saving time for detecting large quantities of altered carbonate carbon isotopes. Furthermore, the operation is simple, reducing analytical costs and providing a reliable technical means for the application of geochemical exploration technology.

The invention relates to a river water quality influence evaluation method based on strontium isotope analysis and a radon model. Precise traceability is realized through a strontium isotope model technical method, and meanwhile, the influence of underground water of an irrigation area along a river on river water quality is quantified by applying a radon mass balance model. Specifically, by taking water quality analysis of the Yellow River irrigation area as an example, the method can accurately locate sources of complex pollutants such as carbonate rock weathering, soil mineral decomposition, chemical fertilizer loss and sewage leakage in underground water along the Yellow River irrigation area, solves the problem of confusion of natural and artificial pollution contributions, and fills the blank of underground water-surface water interaction influence quantification.

The invention discloses a method and system for analyzing the accurate rate of nitrification and denitrification of soil based on nitrate nitrogen and oxygen isotopes. Compared with a traditional bag-burying culture method, the method has the advantages that a quantitative calculation equation of nitrification and denitrification rates is established by analyzing the dynamic change of the nitrogen and oxygen isotopes of the nitrate in the soil and combining an isotope mixing and fractionation effect model, so that accurate distinguishing and independent rate calculation of the conversion process of the two types of nitrogen are realized; the defect that the traditional method can only obtain the comprehensive net rate and cannot reveal the actual conversion process is effectively overcome, and the accuracy and timeliness of soil nitrogen process research are remarkably improved.

The invention discloses an amino acid derivatization method based on ester exchange and application of the amino acid derivatization method in bacterial amino acid stable carbon isotope measurement. According to the method, an alcoholic solution of boron trifluoride serves as a catalyst, carboxyl of amino acid reacts with ester groups in carboxylic ester, the ester groups are transferred to the amino acid, amino-acid ester is generated, and esterification of the carboxyl is achieved; and then carrying out acylation reaction on the amino-acid ester, triethylamine and acetic anhydride to realize acylation of amino groups. According to the method, chemical reagents causing damage to instruments do not need to be used, and generation of water in the reaction process can be avoided, so that the water removal step is omitted, the drying time is shortened, and meanwhile, side reactions and generation of by-products can be reduced. The method disclosed by the invention has good suitability with a stable isotope analysis instrument, can be used for rapidly and accurately determining the stable carbon isotope of the bacterial amino acid in an environmental sample, and has a wide application prospect in the aspects of establishing a bacterial amino acid monomer stable carbon isotope fingerprint database and widening an environmental microorganism traceability technical means.

A method for analyzing light n-alkane components and carbon isotopes in deep and ultra-deep source rocks includes: (S1) subjecting a 5 A molecular sieve column to aging; (S2) pyrolyzing a source rock; and allowing a pyrolysis product to enter the 5 A molecular sieve column; where n-alkanes are adsorbed and retained by the 5 A molecular sieve column; allowing an outflow to pass through a dividing plate and an empty column or a weak polarity column to be discharged; and (S3) performing programmed heating such that the n-alkanes adsorbed on the 5A molecular sieve column are successively desorbed according to molecular weight, and then pass through the dividing plate and the HP-5 or DB-5 column to enter a mass spectrometer for composition analysis or isotopic analysis.

The invention relates to the technical field of detection, and discloses a method for tracing the origin of silkworm cocoons based on a stable isotope technology in combination with a machine learning algorithm, and the method comprises the steps: (1) collecting data; (2) data preprocessing; (3) model optimization; (4) model training; and (5) producing area tracing. According to the invention, origin traceability of silkworm cocoons from different origins is realized based on isotope analysis and a machine learning algorithm. Specifically, hydrogen, oxygen, carbon and nitrogen stable isotope ratio data are combined with KNN, SVM and RF algorithms to realize rapid and high-precision source tracing of silkworm cocoon producing areas. According to the invention, by combining the advantages of various machine learning algorithms, the accuracy and reliability of silkworm cocoon origin tracing are improved.

The invention discloses a method and a related device for probing and tracing a sewage draining exit into a river, and relates to the technical field of sewage treatment, and the method comprises the steps: obtaining a video shot when an unmanned aerial vehicle flies along a target water area, recognizing the video, determining the sewage draining exit into the river, and for each sewage draining exit into the river, determining the source of the sewage draining exit into the river; the method comprises the following steps: acquiring the position, drainage flow, pH value and pollutant concentration of a river-entering drain outlet, determining whether drainage of the river-entering drain outlet is sewage or not based on the pH value and pollutant concentration of the river-entering drain outlet, and calculating the pollutant load of the river-entering drain outlet based on the drainage flow and pollutant concentration of the river-entering drain outlet. The method comprises the following steps: acquiring a fluorescence analysis result and an isotope analysis result obtained by performing three-dimensional fluorescence analysis and isotope analysis on a sampled water sample of a target water area and a sampled water sample of a river sewage draining exit, tracing based on the fluorescence analysis result, and tracing based on the isotope analysis result; according to the invention, probing and tracing of the sewage draining exit entering the river can be efficiently and accurately completed.

The invention discloses an isotope analysis method based on cooperation of a nonlinear spectrum and a laser ablation technology, the isotope analysis method comprises a nonlinear spectrum detection module and a laser ablation module, the laser ablation module can ablate a solid sample to generate plasma, and in the nonlinear spectrum detection module, the laser ablation module is used for ablating the solid sample to generate plasma; the laser output by the wavelength tunable continuous laser is divided into three laser beams, two laser beams are reversely and collinearly transmitted, the other laser beam intersects with the other two laser beams at a small angle, the focuses of the three laser beams coincide in the plasma generated by the laser ablation module, the wavelength of the wavelength tunable continuous laser is scanned, the power of the three laser beams is repeatedly adjusted, and the laser ablation is completed. And recording signal intensities at different wavelengths to obtain a nonlinear spectrum, fitting the spectrum by using a Lorentz function, calculating a signal integral intensity ratio of different isotopes, carrying out root marking on the ratio to obtain an isotope abundance ratio, and calculating the isotope abundance ratio according to the isotopic abundance ratio. The problem that current solid sample isotope analysis needs a complex sample preparation process can be solved.

The invention provides an experimental method for determining stable carbon and oxygen isotopes by a two-way sampling method, and relates to the technical field of stable isotope analysis. The experimental method comprises the following steps: selecting carbon dioxide gas with the purity of more than 99.999% as carbon dioxide reference gas, and selecting a calcium carbonate carbon and oxygen isotope standard substance and a target sample to be measured; and then the stable carbon and oxygen isotopes are determined through a two-way sample introduction method, standard gas does not need to be purchased, the isotope ratio of a sample relative to a standard substance is obtained through conversion application of a formula, finally, the isotope ratio is successfully calibrated to the value of international standard PDB, and the experiment cost is saved. The method can be widely applied to other stable isotope two-way sample introduction methods, principle communication is achieved, and determination can be conducted through the experimental method under the condition that no standard gas exists.

The application discloses a mine area closed goaf pollution release early warning method based on water quality and water level monitoring, and belongs to the underground water monitoring field. The method comprises the following steps: collecting water level data and representative water samples of water-filled rock layers, performing water chemical and isotope analysis on the water samples, analyzing the direct contribution water volume of each water-filled rock layer, inputting a data set containing dynamic monitoring parameters and future expected parameters into a pre-trained water level prediction model to obtain a predicted water level, calculating the expected exchange flow between the closed goaf and the water-filled rock layer by using the Darcy seepage formula based on the predicted water level and the goaf shape, and calculating the expected pollutant discharge amount in the prediction period. If the expected pollutant discharge amount exceeds a preset safety threshold, a warning for the corresponding closed goaf is generated, so that the early warning of the pollutant discharge of the closed goaf is realized, and timely and scientific decision-making basis is provided for the active prevention and control and precise management and control of the mine area underground water pollution risk.

The utility model discloses a trace methane and nitrous oxide isotope component separation, conversion and enrichment device, and belongs to the technical field of isotope analysis and test. Comprising a methane sample tube, a nitrous oxide sample tube, a helium bottle, a first Nafion trap, a VOC adsorption trap, a combustion tube, a four-way valve, an eight-way valve, a carbon dioxide removal assembly, a first enrichment cold trap, a second enrichment cold trap and a chromatographic column, the helium tank is communicated with the gas inlet ends of the methane sample tube and the nitrous oxide sample tube, the gas outlet end of the methane sample tube is communicated with the first Nafion trap and the VOC adsorption trap, the VOC adsorption trap is communicated with the carbon dioxide removal assembly through a four-way valve, the carbon dioxide removal assembly is communicated with a combustion tube, the combustion tube is communicated with the first enrichment cold trap through an eight-way valve, and the combustion tube is communicated with the second enrichment cold trap through an eight-way valve. The first enrichment cold trap is communicated with a second enrichment cold trap through an eight-way valve, and the second enrichment cold trap is communicated with the chromatographic column. According to the utility model, methane or nitrous oxide gas in the air can be separated, converted and enriched, so that methane or nitrous oxide in the air can be measured by instruments such as a mass spectrometer and the like.

The application relates to a carbonate carbon and oxygen isotope analysis device which comprises a rotating table and a measuring mechanism, a plurality of ablation cell cavities are arranged on the rotating table along the circumference of the rotating table, the ablation cell cavities are provided with gas inlets and outlets; components of the measuring mechanism are sequentially arranged along the ablation cell cavities, and the measuring mechanism comprises a laser system, an exhaust unit, a purification sampling unit and a gas isotope mass spectrometer; the laser system is located above the ablation cell cavities and is provided with a laser action area, the laser action area is located on the movement path of the ablation cell cavities; the exhaust unit is used for being connected with the gas inlets and outlets to replace air in the ablation cell cavities with helium; the purification sampling unit is used for being connected with the gas inlets and outlets to sample; and the gas isotope mass spectrometer is connected with the purification sampling unit. The ablation cell cavities are arranged on the rotating table, and the measuring mechanism is matched, so that different samples can be independently and continuously subjected to exhaust, ablation reaction and purification test, and the test efficiency can be improved.

The invention discloses a populus euphratica cloned sub-plant water utilization strategy optimization method based on branch seepage rotation irrigation, and relates to the technical field of desert plant ecological restoration, the optimization method comprises the following specific steps: selecting a branch seepage rotation irrigation ecological restoration test area, dividing a root cutting area and digging a root cutting ditch, and adopting three irrigation modes for processing; determining a cloned child plant-mother plant pair as a research object in September after three years; synchronously collecting multiple types of samples, and sealing and storing at low temperature; treating the sample and measuring indexes; quantifying a water contribution proportion through a comparison method and a model, determining an optimal irrigation mode, and optimizing a water utilization strategy; by combining the multi-mode irrigation and isotope analysis technology, the water source of the populus euphratica cloned sub-plants is accurately analyzed, a traditional experience-driven mode is broken through, the water resource utilization efficiency is improved, meanwhile, the Bayesian model is utilized to quantify the water absorption difference of the cloned sub-plants of different tree ages, a theoretical basis is provided for formulating a differential irrigation scheme, and the method is suitable for popularization and application. And sustainable restoration of an ecological system is promoted.

The present application belongs to the field of information technology, and particularly relates to a coal mine methane emission tracing method based on multi-isotope analysis and associated gas coordination. By fusing multi-isotope characteristics and associated gas ratio analysis, a multi-dimensional tracing system for coal mine regional methane emission is constructed, which significantly improves the accuracy and reliability of methane source identification. Compared with the traditional tracing method relying on single isotope or concentration statistical method, the present application can effectively distinguish various emission types such as coal mine gas, coking plant, coal-fired and agricultural sources in a complex mixed source environment, and realize high-precision cause analysis of multi-source methane emission. The present application realizes the spatio-temporal matching of isotope characteristics and transport path, and can quantitatively identify the influence of high-altitude and external source input on ground concentration.

This invention belongs to the field of solid sample isotope analysis technology, specifically relating to a method for in-situ determination of silver isotopes in silver-gold ore samples in a micro-area. This application proposes a method for in-situ determination of silver isotopes in silver-gold ore samples in a micro-area. By correcting the silver isotope ratio of the sample using standard materials, the silver content of the sample can be obtained. This method is simple, efficient, and easy to operate. It can identify the silver isotope composition characteristics within mineral particles, reflect isotope changes at the microscale, and has the advantage of high spatial resolution (12-30 μm). This method uses silver-gold ore samples as an example only, but it can also be extended to archaeological samples, environmental samples, and biological materials. Simultaneously, it solves the problem of the scarcity of natural matrix-matched standard materials, allowing for the preparation of standard materials with different silver contents to analyze silver-gold ore samples with varying silver contents.

The invention discloses a hydrocarbon source rock thermal simulation gas isotope analysis sample introduction auxiliary device and method, and the device comprises a main pipeline connected to a gas outlet of an isotope ratio mass spectrometer, a plurality of concentration regulation and control pipelines connected to the main pipeline, a sample introduction amount controller and a gas chromatograph; each concentration regulation and control pipeline is provided with a regulation and control electromagnetic valve and a needle valve, and the sample injection concentration controller generates a control instruction for regulating and controlling the electromagnetic valves according to an analysis result of the gas chromatograph. During sample introduction, a gas sample is firstly injected into the isotope ratio mass spectrometer, each gas component gradually flows out of the chromatographic column according to the peak appearance time, and the sample introduction concentration controller controls the opening and closing of the corresponding electromagnetic valve according to a control instruction, so that a part of the gas component with high concentration is discharged within the peak appearance time period; the response values of all the gas components entering the isotope ratio mass spectrometer for analysis are in the same order of magnitude, and isotope analysis of all the gas components with large concentration difference can be completed through one-time sample introduction.

The invention belongs to the technical field of solid sample isotope analysis, and particularly relates to a method for micro-area in-situ determination of silver isotopes in a gold ore sample. According to the method, the silver isotope ratio of the to-be-detected sample is corrected through the standard substance, so that the silver content of the to-be-detected sample is analyzed. The method is simple, efficient and easy to operate, the silver isotope composition characteristics in the mineral particles can be recognized, isotope changes can be reflected on the microscale, and the advantage of high spatial resolution (12-30 microns) is achieved. The method can be expanded to archaeological samples, environmental samples, biological materials and the like only by taking a silver-gold ore sample as an example. Meanwhile, the problem that natural matrix matching standard substances are deficient is solved, and standard substances with different silver contents can be prepared according to requirements and used for analyzing silver-gold ore samples with different silver contents.

This invention discloses a method for detecting the stable carbon and nitrogen isotopes of sulfamethoxazole monomers, belonging to the field of analytical chemistry. By optimizing the derivatization conditions of sulfamethoxazole, this invention achieves gas chromatography separation and detection, and establishes an analytical method for the stable carbon and nitrogen isotopes of sulfamethoxazole monomers using GC-C-IRMS. This fills a gap in the field of antibiotic stable isotope analysis and lays the foundation for in-depth research on the migration and transformation processes of antibiotics in the environment.

An isotope analysis system includes: a first liquid channel, second liquid channels, third liquid channels, fourth liquid channels connected with a heating reactor, a diverter, and a selector valve. The diverter is configured to divert liquid from the first liquid channel to the third liquid channels. The selector valve comprises a first liquid outlet and a plurality of first liquid inlets. A third liquid channel and a fourth liquid channel are assigned to each of the plurality of second liquid channels; an end of the fourth liquid channel is connected to both an end of the second liquid channel and an end of the third liquid channel; and a first liquid inlet is assigned to each of the plurality of fourth liquid channels, and another end of the fourth liquid channel is connected to the first liquid inlet.

The invention provides a method for judging the source, formation time and cause of dolomite fluid, which comprises the following steps: determining age data of a dolomite sample, and judging the formation time of dolomite; respectively carrying out carbon and oxygen isotope determination and rare earth element determination on the dolomite sample, comparing the determination result with seawater data in the same period to obtain an analysis result, and judging the source of the diagenesis fluid by combining the analysis result of the carbon and oxygen isotope and the analysis result of the rare earth element; and determining the dolomite formation cause by combining the dolomite formation time and the diagenetic fluid source result. According to the judgment method provided by the invention, the dolomite cause can be quickly judged, the process is simplified, few testing means are used, time, manpower and material resources are greatly saved, and the problems of conclusion contradiction and uncertainty caused by adopting multiple judgment standards at the same time in the prior art are solved.

This invention discloses a pretreatment device for precise quantification and isotope analysis of dissolved organic nitrogen, including an extraction and filtration device for extracting and filtering the sample; and a separation and purification device connected to the extraction and filtration device for separating and purifying the extracted and filtered solution to obtain purified dissolved organic nitrogen. The separation and purification device is an electrodialysis device, or it includes an aluminum electrode ionization system, an anion and cation exchange membrane, and a fractional purification system. This invention provides a basis for rapidly and accurately analyzing the isotope content of dissolved organic nitrogen and phosphorus in sediments and effectively tracing the source of dissolved organic nitrogen and phosphorus based on the detection results.

This invention belongs to the field of isotope analysis technology, specifically relating to environmental tracing and geochronological studies of the cosmogenic nuclide beryllium-10. It discloses an automated collection device and method for purifying the cosmogenic nuclide beryllium-10. The device constructs an automated chain of online reaction, real-time monitoring, and intelligent diversion, eliminating reliance on manual solution collection experience. The mixed reaction module precisely proportions the eluent, buffer solution, and chromogenic solution, creating a specific instantaneous chromogenic environment for beryllium ions. Combined with an optical detection module, it can capture color signals in real time and convert them into digital signals. The control module drives the fluid switching module at millisecond levels based on preset signal thresholds, accurately separating the target product from the waste liquid. This mechanism can accurately identify the start and end points of the elution peaks of the target element, solving the problem of beryllium-10 loss caused by complex sample matrices or resin aging. Through standardized photoelectric detection, it ensures high recovery rates and purity requirements for ultra-trace beryllium-10 analysis.