Isotope tracing method and device for groundwater pollution, electronic equipment and medium

Abstract

The embodiment of the application provides a kind of groundwater pollution isotope tracing method and device, electronic equipment and medium, belong to pollution tracing technical field.The method comprises: obtaining the natural pollutant information of groundwater, obtains the artificial pollutant information of pollution source;Based on natural pollutant information and artificial pollutant information, carry out traceable isotope screening, obtain candidate isotope set;Based on groundwater and pollution source, to candidate isotope set carries out isotope difference evaluation, obtains isotope distinguishability;Candidate isotope set is carried out isotope resource consumption evaluation, obtains isotope resource consumption data;Based on isotope distinguishability and isotope resource consumption data, to candidate isotope set carries out isotope screening, obtains target isotope combination;Based on target isotope combination, to groundwater carries out pollution source tracing.The embodiment of the application can improve the tracing accuracy of groundwater pollution.

Description

Technical Field

[0001] This application relates to the field of pollution source tracing technology, and in particular to an isotope source tracing method and apparatus, electronic equipment and medium for groundwater pollution. Background Technology

[0002] Groundwater pollution source tracing refers to tracing the source of pollutants that cause groundwater pollution in order to identify the source of the pollutants. For example, by tracing the source of chemical pollutants in groundwater, it is possible to pinpoint the factory that discharged the chemical pollutant, thereby reducing groundwater pollution.

[0003] Currently, the common method for tracing the source of groundwater pollution is to trace the source of pollutants using any single isotope. However, isotopes in groundwater pollutants and isotopes in man-made pollutants coexist in groundwater, which makes it time-consuming and inaccurate when using a single isotope for groundwater pollution tracing. Therefore, how to improve the accuracy of groundwater pollution tracing has become an urgent technical problem to be solved. Summary of the Invention

[0004] The main objective of this application is to propose an isotopic source tracing method, apparatus, electronic device, and medium for groundwater pollution, aiming to improve the accuracy of groundwater pollution source tracing.

[0005] To achieve the above objectives, a first aspect of this application proposes an isotopic source tracing method for groundwater pollution, the method comprising: Obtain information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources; Based on the information on natural pollutants and anthropogenic pollutants, a traceable isotope screening is performed to obtain a candidate isotope set. Based on the groundwater and the pollution source, the isotopic difference assessment of the candidate isotope set is performed to obtain the isotopic discrimination. Isotope resource consumption assessment is performed on the candidate isotope set to obtain isotope resource consumption data; Based on the isotope distinguishability and the isotope resource consumption data, isotope screening is performed on the candidate isotope set to obtain the target isotope combination. Based on the target isotope combination, the pollution source of the groundwater is traced.

[0006] In some embodiments, the step of isotope screening of the candidate isotope set based on the isotope distinguishability and the isotope resource consumption data to obtain a target isotope combination includes: The candidate isotopes are randomly combined to obtain random isotope combinations; Based on the isotope distinguishability, the combination difference of the random isotope combination is evaluated to obtain the isotope combination distinguishability. Based on the isotope resource consumption data, the resource consumption of the random isotope combination is calculated to obtain isotope combination resource consumption data. Based on the isotope combination distinguishability and the isotope combination resource consumption data, the random isotope combinations are combined and screened to obtain the target isotope combination.

[0007] In some embodiments, the step of performing combination screening on the random isotope combinations based on the isotope combination distinguishability and the isotope combination resource consumption data to obtain the target isotope combination includes: The maximum value of the isotope combination discrimination is selected by filtering the maximum value of the isotope combination; The maximum value of the resource consumption data of the isotope combination is filtered to obtain the maximum resource consumption data of the isotope combination; Based on a preset weight allocation strategy, the maximum distinguishability of the isotope combination, and the maximum resource consumption data of the isotope combination, the random isotope combination is iteratively screened to obtain the target isotope combination.

[0008] In some embodiments, the weight allocation strategy includes a distinguishability weight and a resource consumption weight. The step of iteratively filtering the random isotope combinations based on the preset weight allocation strategy, the maximum distinguishability of the isotope combination, and the maximum resource consumption data of the isotope combination to obtain the target isotope combination includes: Based on the discrimination weight, the maximum discrimination of the isotope combination, and the discrimination of the isotope combination, the discrimination score of the random isotope combination is predicted to obtain the combination discrimination score. Based on the resource consumption weight, the maximum resource consumption data of the isotope combination, and the resource consumption data of the isotope combination, the resource consumption score of the random isotope combination is predicted to obtain the combined resource consumption score. Based on the combined discrimination score and the combined resource consumption score, the score difference is calculated to obtain the random isotope combination score; Based on the random isotope combination score, the candidate isotope set is iteratively processed to obtain the target isotope combination.

[0009] In some embodiments, the isotopic difference assessment of the candidate isotope set based on the groundwater and the pollution source to obtain isotopic discrimination includes: Based on the groundwater, the natural abundance of the candidate isotope set is calculated to obtain the natural abundance of groundwater isotopes. Based on the pollution source, the natural abundance of the candidate isotope set is calculated to obtain the natural abundance of the pollution source isotopes. Based on the candidate isotope set, the natural abundance of groundwater isotopes and the natural abundance of pollution source isotopes are compared to obtain the isotope discrimination.

[0010] In some embodiments, the step of comparing the natural abundance of groundwater isotopes and the natural abundance of pollution source isotopes based on the candidate isotope set to obtain the isotope discrimination includes: Based on the candidate isotope set, the mean abundance of the groundwater isotopes and the pollution source isotopes is calculated to obtain the average natural abundance of the isotopes. Based on the average natural abundance of the isotopes, the natural abundance of the groundwater isotopes, and the natural abundance of the pollution source isotopes, variance is calculated to obtain the isotope discrimination.

[0011] In some embodiments, the step of performing traceable isotope screening based on the information of natural pollutants and the information of anthropogenic pollutants to obtain a candidate isotope set includes: Based on the information on natural pollutants and anthropogenic pollutants, traceable elements are screened to obtain a set of candidate elements; Based on the information on natural pollutants and anthropogenic pollutants, isotope supplementation is performed on the candidate element set to obtain the candidate isotope set.

[0012] To achieve the above objectives, a second aspect of this application provides an isotope tracing device for groundwater pollution, the device comprising: The information acquisition module is used to acquire information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources. An isotope screening module is used to perform traceable isotope screening based on the information of natural pollutants and the information of anthropogenic pollutants to obtain a set of candidate isotopes. The difference assessment module is used to assess the isotopic difference of the candidate isotope set based on the groundwater and the pollution source, and obtain the isotopic discrimination. The cost assessment module is used to assess the isotope resource consumption of the candidate isotope set and obtain isotope resource consumption data. The combination screening module is used to screen the candidate isotope set based on the isotope distinguishability and the isotope resource consumption data to obtain the target isotope combination. The pollution source tracing module is used to trace the pollution source of the groundwater based on the target isotope combination.

[0013] To achieve the above objectives, a third aspect of the present application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method of the first aspect described above.

[0014] To achieve the above objectives, a fourth aspect of the present application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method of the first aspect described above.

[0015] The isotope source tracing method, apparatus, electronic equipment, and medium proposed in this application provide data support for preliminary isotope screening by acquiring information on natural pollutants in groundwater and anthropogenic pollutants from pollution sources. Secondly, based on the information on natural and anthropogenic pollutants, traceable isotopes are screened to obtain a candidate isotope set, narrowing the scope of isotope selection for groundwater pollution source tracing and thus improving the efficiency of groundwater pollution source tracing. Finally, based on the groundwater and pollution sources, isotopic differences are analyzed in the candidate isotope set. The evaluation process yields isotope discrimination, and isotope resource consumption is assessed for candidate isotope sets to obtain isotope resource consumption data. Based on the isotope discrimination and isotope resource consumption data, the candidate isotope sets are further screened for combined isotopes. This allows for the selection of isotope combinations that are easy to distinguish pollutant sources and have low resource consumption, thereby improving the accuracy of groundwater pollution source tracing and reducing the resource consumption of groundwater pollution source tracing. Finally, based on the target isotope combination, groundwater pollution source tracing is performed, which can improve the accuracy of groundwater pollution source tracing. Attached Figure Description

[0016] Figure 1 This is a flowchart of the isotope source tracing method for groundwater pollution provided in the embodiments of this application; Figure 2 yes Figure 1 The flowchart of step S102 in the document; Figure 3 yes Figure 1 The flowchart of step S103 in the process; Figure 4 yes Figure 3 The flowchart of step S303 in the process; Figure 5 yes Figure 1 The flowchart of step S105 in the process; Figure 6 yes Figure 5 The flowchart of step S504 in the process; Figure 7 yes Figure 6 The flowchart of step S603 in the process; Figure 8 This is a schematic diagram of the structure of the isotope tracing device for groundwater pollution provided in the embodiments of this application; Figure 9 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0018] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0020] First, let's analyze some of the terms used in this application: Groundwater pollution source tracing system: This comprehensive technical system integrates various scientific methods and analytical approaches to accurately identify and locate the sources of groundwater pollution. It typically combines hydrogeological surveys, chemical analysis, isotope techniques, and numerical simulations to systematically study the sources, migration pathways, and extent of groundwater pollutants. The core objective of this system is to provide a scientific basis for the prevention and control of groundwater pollution, helping to formulate effective environmental protection strategies.

[0021] Natural abundance: Natural abundance refers to the relative abundance of a certain isotope in nature, usually expressed as the percentage of the number of atoms of that isotope relative to the total number of atoms of all isotopes.

[0022] Groundwater pollution source tracing refers to tracing the source of pollutants that cause groundwater pollution in order to identify the source of the pollutants. For example, by tracing the source of chemical pollutants in groundwater, it is possible to pinpoint the factory that discharged the chemical pollutant, thereby reducing groundwater pollution.

[0023] Currently, the common method for tracing the source of groundwater pollution is to trace the source of pollutants using any single isotope. However, isotopes in groundwater pollutants and isotopes in man-made pollutants coexist in groundwater, which makes it time-consuming and inaccurate when using a single isotope for groundwater pollution tracing. Therefore, how to improve the accuracy of groundwater pollution tracing has become an urgent technical problem to be solved.

[0024] Based on this, embodiments of this application provide an isotope source tracing method and apparatus, electronic equipment and medium for groundwater pollution, aiming to improve the accuracy of groundwater pollution source tracing.

[0025] The isotope source tracing method, apparatus, electronic equipment, and medium for groundwater pollution provided in this application are specifically illustrated through the following embodiments. First, the isotope source tracing method for groundwater pollution in this application is described.

[0026] The embodiments of this application can acquire and process relevant data based on artificial intelligence technology. Artificial intelligence (AI) refers to the theories, methods, technologies, and application systems that use digital computers or machines controlled by digital computers to simulate, extend, and expand human intelligence, perceive the environment, acquire knowledge, and use that knowledge to obtain optimal results.

[0027] Foundational technologies for artificial intelligence generally include sensors, dedicated AI chips, cloud computing, distributed storage, big data processing, operating / interactive systems, and mechatronics. AI software technologies mainly encompass computer vision, robotics, biometrics, speech processing, natural language processing, and machine learning / deep learning.

[0028] The isotope source tracing method for groundwater pollution provided in this application relates to the field of pollution source tracing technology. This method can be applied to a terminal, a server, or software running on either a terminal or a server. In some embodiments, the terminal can be a smartphone, tablet, laptop, desktop computer, etc.; the server can be configured as an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms; the software can be an application implementing the isotope source tracing method for groundwater pollution, but is not limited to the above forms.

[0029] This application can be used in a wide variety of general-purpose or special-purpose computer system environments or configurations. Examples include: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, and distributed computing environments including any of the above systems or devices. This application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0030] Figure 1 This is an optional flowchart of the isotope source tracing method for groundwater pollution provided in the embodiments of this application. The isotope source tracing method for groundwater pollution can be applied to groundwater pollution source tracing systems. Figure 1 The method may include, but is not limited to, steps S101 to S106.

[0031] Step S101: Obtain information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources; Step S102: Based on information on natural pollutants and anthropogenic pollutants, traceable isotopes are screened to obtain a set of candidate isotopes. Step S103: Based on groundwater and pollution sources, evaluate the isotopic differences of candidate isotope sets to obtain isotopic discrimination. Step S104: Evaluate the isotope resource consumption of the candidate isotope set to obtain isotope resource consumption data. Step S105: Based on isotope discrimination and isotope resource consumption data, the candidate isotope set is screened to obtain the target isotope combination. Step S106: Based on the target isotope combination, trace the source of pollution in the groundwater.

[0032] Steps S101 to S106 of this application embodiment, by acquiring information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources, provide data support for preliminary isotope screening. Secondly, based on the information on natural and anthropogenic pollutants, traceable isotope screening is performed to obtain a candidate isotope set, narrowing the scope of isotope selection for groundwater pollution tracing and thus improving the efficiency of groundwater pollution tracing. Then, based on groundwater and pollution sources, isotope difference assessment is performed on the candidate isotope set to obtain isotope discrimination. Isotope resource consumption assessment is also performed on the candidate isotope set to obtain isotope resource consumption data. Based on the isotope discrimination and isotope resource consumption data, combined isotope screening is performed on the candidate isotope set, further identifying isotope combinations that are easy to distinguish pollutant sources and have low resource consumption, thereby improving the accuracy of groundwater pollution tracing and reducing resource consumption. Finally, based on the target isotope combination, groundwater pollution source tracing is performed, which can improve the accuracy of groundwater pollution tracing.

[0033] In step S101 of some embodiments, groundwater refers to saturated water in the pores of soil and rock below the surface. Natural pollutant information refers to information about pollutants naturally present in groundwater. For example, in a groundwater pollution source tracing scenario, natural pollutant information could be the concentration and isotopic composition of substances such as nitrates, sulfates, and carbonates naturally present in groundwater. It should be noted that naturally present pollutants in groundwater refer to substances formed by natural processes such as rock weathering and soil leaching. A pollution source refers to a fixed or mobile entity that releases pollutants into the environment through discharge or leakage, such as industrial discharge outlets, agricultural fertilization areas, and domestic sewage pipe networks. Anthropogenic pollutant information refers to information about pollutants introduced into the environment by human activities, including but not limited to industrial emissions, agricultural activities, and domestic sewage. For example, in a groundwater pollution source tracing scenario, anthropogenic pollutant information could be information about heavy metals and organic pollutants in industrial wastewater, as well as fertilizers and pesticides used in agricultural activities.

[0034] This application embodiment can obtain groundwater samples through on-site sampling, and then use methods such as ion chromatography or gas chromatography-mass spectrometry to determine the concentration and isotopic composition of naturally occurring pollutants in the sample, and record the measured data of pollutant concentration and isotopic composition, thereby obtaining information on natural pollutants in the groundwater. It should be noted that before taking groundwater samples, users can consult geological and hydrogeological data to help understand information such as rock types and soil composition in the groundwater in the sampling area, thereby improving the accuracy of natural pollutant information.

[0035] Meanwhile, in this embodiment of the application, by conducting on-site investigations of pollution sources such as surrounding factories, farms, and sewage treatment plants, and collecting samples of wastewater, exhaust gas, or solid waste discharged from the pollution sources, and then recording data such as the types and concentrations of anthropogenic pollutants in the wastewater, exhaust gas, or solid waste samples, information on anthropogenic pollutants can be obtained.

[0036] In step S102 of some embodiments, the candidate isotope set refers to the set of isotopes of numerous elements that are suitable for tracing the source of pollutants. For example, in the scenario of tracing the source of groundwater pollution, the candidate isotope set may include isotopes of hydrogen (H-1, H-2), isotopes of oxygen (O-16, O-18), isotopes of carbon (C-12, C-13), and isotopes of lead (Pb-204, Pb-206, Pb-207, Pb-208), etc.

[0037] The embodiments of this application can select elements suitable for tracing and tracking groundwater pollution from the elements contained in numerous pollutants based on information on natural pollutants and anthropogenic pollutants, forming a candidate element set. Then, by combining the isotope information in the information on natural pollutants and anthropogenic pollutants, the elements in the candidate element set are replaced with the isotopes of those elements to obtain a candidate isotope set.

[0038] For details, please refer to Figure 2 In some embodiments, step S102 may include, but is not limited to, steps S201 to S202: Step S201: Based on information on natural pollutants and anthropogenic pollutants, traceable elements are screened to obtain a set of candidate elements; Step S202: Based on information on natural pollutants and anthropogenic pollutants, the candidate element set is supplemented with isotopes to obtain a candidate isotope set.

[0039] In step S201 of some embodiments, the candidate element set refers to the set of elements suitable for tracing the source of pollutants. It should be noted that the elements in the candidate element set are all elements present in groundwater or pollution sources.

[0040] Based on information on natural and anthropogenic pollutants, this application embodiment can identify the set of elements that can appear in natural and anthropogenic pollutants. Furthermore, by filtering out elements in this set that are easily adsorbed and precipitated in groundwater, easily volatilized, or rapidly transformed at the redox interface, a candidate element set can be obtained. Therefore, the elements in the candidate element set have characteristics such as stable chemical forms and clear migration paths.

[0041] In step S202 of some embodiments, after obtaining the candidate element set, based on the isotopic information contained in the natural pollutant information and the anthropogenic pollutant information, stable isotopes can be added to each element in the candidate element set, thereby transforming the candidate element set into a candidate isotope set. For example, if the candidate element set contains lead, by querying the natural pollutant information and the anthropogenic pollutant information, it can be known that the lead element in the natural pollutant and anthropogenic pollutant contains isotopes such as Pb-204, Pb-206, Pb-207, and Pb-208. Then, the isotopes Pb-204, Pb-206, Pb-207, and Pb-208 can be used to replace the lead element in the candidate element set to achieve isotopic supplementation of lead element.

[0042] Steps S201 to S202, as illustrated in this embodiment, allow for the precise identification of elements suitable for tracing pollutant sources from a large pool of elements by querying element information in both natural and anthropogenic pollutant information. This forms a candidate element set. Furthermore, the candidate element set is supplemented with isotopes based on the isotopic information of each element in the natural and anthropogenic pollutant information, forming a candidate isotope set. This narrows the isotope selection range for groundwater pollution tracing, improving the isotopic resolution and accuracy of groundwater pollution tracing.

[0043] In step S103 of some embodiments, isotope discrimination refers to the degree of difference between isotopes in groundwater and different pollution sources. It is important to understand that a higher isotope discrimination indicates a greater degree of difference between different pollution sources, making it more suitable for groundwater pollution tracing. For example, if the isotope discriminations of isotopes Pb-204, Pb-206, Pb-207, and Pb-208 are 1.101, 5.603, 16.3, and 2.03, respectively, then isotope Pb-207 exhibits a greater degree of difference between different pollution sources, making it more suitable for groundwater pollution tracing.

[0044] The embodiments of this application can obtain isotope discrimination by separately measuring the natural abundance of each candidate isotope in groundwater and pollution sources, and then quantifying the differences between isotopes by the difference in natural abundance of the same candidate isotopes in groundwater and pollution sources.

[0045] For details, please refer to Figure 3 In some embodiments, step S103 may include, but is not limited to, steps S301 to S303: Step S301: Based on groundwater, calculate the natural abundance of candidate isotope sets to obtain the natural abundance of groundwater isotopes. Step S302: Based on the pollution source, calculate the natural abundance of the candidate isotope set to obtain the natural abundance of the pollution source isotopes. Step S303: Based on the candidate isotope set, the natural abundance of groundwater isotopes and the natural abundance of pollution source isotopes are compared to obtain the isotope discrimination.

[0046] In steps S301 and S302 of some embodiments, the natural abundance of groundwater isotopes refers to the relative abundance or ratio of each candidate isotope in the candidate isotope set in the groundwater. For example, the natural abundance of groundwater isotope O-18 in groundwater can be 10.2‰. The natural abundance of pollution source isotopes refers to the relative abundance or ratio of each candidate isotope in the candidate isotope set in the pollution source. For example, the natural abundance of groundwater isotope O-18 in groundwater can be 20.9‰.

[0047] This application embodiment obtains groundwater bodies through continuous pumping or stratified sampling, calculates the relative abundance of each candidate isotope in the water body to obtain the absolute abundance, and further, using the isotope mass balance principle, corrects the measured absolute abundance according to international standards and subtracts fractionation caused by secondary processes such as evaporation and concentration and water-rock interaction, finally obtaining the natural abundance of groundwater isotopes for each candidate isotope. Simultaneously, the relative abundance of each candidate isotope in a pollution source can be calculated using the same method to obtain the natural abundance of pollution source isotopes for each candidate isotope. It should be noted that if the pollution source involves multi-stage treatment or long-term stockpiling, decay correction or secondary fractionation of the candidate isotopes can be performed to improve the accuracy of the natural abundance of pollution source isotopes.

[0048] In addition, embodiments of this application can also obtain the natural abundance of each candidate isotope in groundwater and the natural abundance of each candidate isotope in pollution sources by querying existing isotope information. In step S303 of some embodiments, the average natural abundance of each candidate isotope in the candidate isotope set can be calculated based on the natural abundance of groundwater isotopes and the natural abundance of pollution source isotopes. Then, the variance can be calculated based on the average natural abundance, which can quantify the isotopic differences between different pollutants and obtain the isotopic distinguishability.

[0049] For details, please refer to Figure 4 In some embodiments, step S303 may include, but is not limited to, steps S401 to S402: Step S401: Based on the candidate isotope set, calculate the mean abundance of groundwater isotopes and pollution source isotopes to obtain the average natural abundance of isotopes. Step S402: Based on the average natural abundance of isotopes, the natural abundance of groundwater isotopes, and the natural abundance of pollution source isotopes, variance is calculated to obtain the isotope discrimination.

[0050] In steps S401 and S402 of some embodiments, the average natural abundance of isotopes refers to the arithmetic mean of the natural abundance of groundwater isotopes and the natural abundance of pollution source isotopes of the same candidate isotope. For example, if the natural abundance of groundwater isotopes for the candidate isotope O-18 is 5‰ and the natural abundance of pollution source isotopes is 10‰, then the average natural abundance of isotopes is (5‰ + 10‰) / 2 = 7.5‰. Further, based on the average natural abundance of isotopes calculated from the mean, the variance formula can be used to calculate the degree of difference between each candidate isotope in groundwater and different pollution sources. Specifically, the isotope discrimination formula can be used to calculate the isotope discrimination of each candidate isotope: , in, This represents the isotopic distinguishability of the k-th candidate isotope. Indicates the types and quantities of pollutants. Indicates the type number of the pollutant. Indicates the species number of the candidate isotope. This represents the average natural abundance of the k-th candidate isotope. Let represent the natural abundance of the k-th candidate isotope in the j-th pollutant. It should be noted that when the j-th pollutant is a natural pollutant in groundwater, the natural abundance of this isotope is the natural abundance of the groundwater isotope. When the j-th pollutant is an anthropogenic pollutant in the pollution source, the natural abundance of this isotope is the natural abundance of the pollution source isotope.

[0051] Steps S401 to S402, as shown in the embodiments of this application, calculate the mean abundance of groundwater isotopes and pollution source isotopes based on the candidate isotope set to obtain the average natural abundance of isotopes. Then, calculate the variance based on the average natural abundance of isotopes, the natural abundance of groundwater isotopes, and the natural abundance of pollution source isotopes to obtain the isotope discrimination. This can quantify and amplify the degree of isotopic differences between groundwater and different pollution sources, thereby improving the accuracy and reliability of groundwater pollution source tracing.

[0052] Steps S301 to S303 of the embodiments of this application, by measuring the natural abundance of each candidate isotope in groundwater and pollution sources, can clarify the relative content of various candidate isotopes in groundwater and pollution sources, laying a data foundation for calculating the differences of candidate isotopes in groundwater and pollution sources. Furthermore, by comparing the natural abundance of groundwater isotopes with the natural abundance of pollution source isotopes of the same candidate isotopes, the differences of candidate isotopes can be quantified, thereby facilitating the further screening of candidate isotopes in the candidate isotope set to improve the accuracy of groundwater pollution source tracing.

[0053] In step S104 of some embodiments, isotope resource consumption data refers to the resource consumption required to acquire and detect isotopes. Resource consumption includes the purchase cost of isotope standard materials, the operating cost of detection instruments, etc. For example, isotope resource consumption data for isotope Pb-204 may include the cost of purchasing isotope Pb-204 standard materials, the consumable and energy costs of operating a multi-receiver inductively coupled plasma mass spectrometer to detect isotope Pb-204, etc.

[0054] This application embodiment clarifies the acquisition cost of various candidate isotopes by querying their basic information. It should be noted that when tracing the source of groundwater pollution in this application embodiment, in addition to purchasing the corresponding standard materials for various isotopes, it is also necessary to use various detection instruments to detect the isotopes. Therefore, when calculating the isotope resource consumption data of various candidate isotopes in the candidate isotope set, it is also necessary to calculate the operating resource consumption of the detection instruments for various candidate isotopes to obtain the instrument operating resource consumption data. Furthermore, by summing the acquisition cost of various candidate isotopes and the instrument operating resource consumption data, the isotope resource consumption data can be obtained.

[0055] It should also be noted that, in addition to the acquisition costs and instrument operation resource consumption data of various isotopes, the embodiments of this application may also include the human resource consumption and time resource consumption of groundwater pollution source tracing as part of the isotope resource consumption data of each candidate isotope.

[0056] In step S105 of some embodiments, the target isotope combination refers to a combination of any one or more isotopes in the candidate isotope set. It should be noted that the isotopes in the target isotope combination not only have high isotope distinguishability but also low isotope resource consumption data. For example, in a groundwater pollution source tracing scenario, by calculating the isotope distinguishability and isotope resource consumption data of each candidate isotope in the candidate isotope set, a target isotope combination composed of hydrogen isotopes H-1 and H-2, oxygen isotope O-18, carbon isotope C-13, nitrogen isotope N-15, and lead isotopes Pb-206 and Pb-207 can be selected.

[0057] In this embodiment of the application, candidate isotopes are randomly combined to obtain multiple sets of random isotope combinations. Then, the random isotope combinations are screened based on the isotope differentiation and isotope resource consumption data of the random isotopes in each set of random isotopes to obtain the target isotope combination.

[0058] For details, please refer to Figure 5 In some embodiments, step S105 may include, but is not limited to, steps S501 to S504: Step S501: Randomly combine the candidate isotopes to obtain a random isotope combination; Step S502: Based on the isotope discrimination, evaluate the combination difference of random isotope combinations to obtain the isotope combination discrimination. Step S503: Based on isotope resource consumption data, calculate the resource consumption of random isotope combinations to obtain isotope combination resource consumption data. Step S504: Based on the isotope combination discrimination and isotope combination resource consumption data, random isotope combinations are combined and screened to obtain target isotope combinations.

[0059] In step S501 of some embodiments, random isotope combination refers to several subsets generated by random sampling of candidate isotopes in the candidate isotope set. It should be noted that each subset represents an isotope combination scheme for tracing groundwater pollution sources. For example, when the candidate isotope set is {H-1, H-2, O-16, O-18, C-12, C-13, Pb-204, Pb-206, Pb...} When the number of Pb-207 and Pb-208 is used, random isotope combinations can be {H-1, O-16, C-12, Pb-204, Pb-208}, {H-1, O-18, C-12, Pb-204}, {O-16, O-18, Pb-206, Pb-207, Pb-208}, {H-2, O-18, C-12, C-13, Pb-208}, etc.

[0060] The embodiments of this application can combine one or more candidate isotopes to form a new set, namely a random isotope combination, by randomly combining candidate isotopes. It should be noted that the number of random isotope combinations is preset and can be one or more sets.

[0061] In steps S502 and S503 of some embodiments, the isotope combination discrimination refers to the comprehensive difference index obtained by weighted summation of the isotope discrimination of each isotope within the random isotope combination. The isotope combination resource consumption data refers to the comprehensive cost index obtained by weighted summation of the isotope resource consumption data of each isotope within the random isotope combination.

[0062] In this embodiment of the application, the isotope combination discrimination and isotope resource consumption data of each isotope in a random isotope combination can be obtained by weighted summation of the isotope discrimination and isotope resource consumption data of that random isotope combination. For example, if the isotope discrimination of isotope O-18 is 10 and the isotope resource consumption data is 1000, the isotope discrimination of isotope Pb-208 is 5 and the isotope resource consumption data is 1500, and the weight ratio of isotope O-18 and isotope Pb-208 is 1:1, then the isotope combination discrimination of the random isotope combination {O-18, Pb-208} is 0.5×10+0.5×5=7.5, and the isotope combination resource consumption data is 0.5×1000+0.5×1500=1250.

[0063] In step S504 of some embodiments, the maximum isotope combination and the maximum resource consumption data of the isotope combination can be obtained by extreme value screening of the isotope combination discrimination and isotope combination resource consumption data. Then, according to the pre-set weight allocation strategy, the target isotope combination can be screened from the random isotope combination.

[0064] For details, please refer to Figure 6 In some embodiments, step S504 may include, but is not limited to, steps S601 to S603: Step S601: Filter the maximum value of the isotope combination discrimination to obtain the maximum discrimination of the isotope combination; Step S602: Filter the maximum value of the isotope combination resource consumption data to obtain the maximum resource consumption data of the isotope combination; Step S603: Based on the preset weight allocation strategy, the maximum distinguishability of isotope combinations, and the maximum resource consumption data of isotope combinations, the random isotope combinations are iteratively screened to obtain the target isotope combinations.

[0065] In steps S601 and S602 of some embodiments, the maximum isotope combination discrimination refers to the maximum value of the isotope combination discrimination among multiple random isotope combinations. The maximum isotope combination resource consumption data refers to the maximum value of the isotope combination resource consumption data among multiple random isotope combinations.

[0066] The embodiments of this application can locate the maximum isotope combination from multiple isotope combination discrimination values ​​by comparing the numerical values ​​of isotope combination discrimination values ​​in multiple sets of random isotope combinations. At the same time, the maximum resource consumption data of an isotope combination can also be located from multiple isotope combination resource consumption data by comparing the numerical values ​​of isotope combination resource consumption data in multiple sets of random isotope combinations.

[0067] In step S603 of some embodiments, the weight allocation strategy refers to the quantitative data on the importance of isotope combination discrimination and isotope combination resource consumption data in the isotope combination screening process. For example, when the weight allocation strategy is isotope combination discrimination weight 0.9 and isotope combination resource consumption data weight 0.1, it indicates that isotope combination discrimination is very important in the isotope combination screening process, but attention still needs to be paid to isotope combination resource consumption data.

[0068] In this embodiment, the comprehensive score of a random isotope combination can be calculated based on a preset weight allocation strategy, the maximum distinguishability of the isotope combination, the maximum resource consumption data of the isotope combination, and the distinguishability and resource consumption data of the random isotope combination. Then, based on the comprehensive score, the random isotope combination is iteratively evolved to make the comprehensive score of the random isotope combination reach the maximum value, and the random isotope combination corresponding to the maximum comprehensive score is taken as the target isotope combination.

[0069] For details, please refer to Figure 7 In some embodiments, the weight allocation strategy includes discrimination weight and resource consumption weight, and step S603 may include, but is not limited to, steps S701 to S704: Step S701: Based on the discrimination weight, the maximum discrimination of the isotope combination, and the discrimination of the isotope combination, predict the discrimination score of the random isotope combination to obtain the combination discrimination score. Step S702: Based on the resource consumption weight, the maximum resource consumption data of the isotope combination, and the resource consumption data of the isotope combination, predict the resource consumption score of the random isotope combination to obtain the combination resource consumption score. Step S703: Based on the combination discrimination score and the combination resource consumption score, calculate the score difference to obtain the random isotope combination score; Step S704: Based on the random isotope combination score, iteratively process the candidate isotope set to obtain the target isotope combination.

[0070] In steps S701 to S703 of some embodiments, the discrimination weight refers to the weight of the isotope combination discrimination in the target isotope combination screening process. The combination discrimination score refers to the score data of the random isotope combination in terms of discrimination; it should be noted that the larger the combination discrimination score, the better the performance of the random isotope combination. The resource consumption weight refers to the weight of the isotope combination resource consumption data in the target isotope combination screening process. The combination resource consumption score refers to the score data of the random isotope combination in terms of resource consumption; it should be noted that the smaller the combination resource consumption score, the better the performance of the random isotope combination. The random isotope combination score refers to the comprehensive score data of the random isotope combination in terms of discrimination and resource consumption; it should be noted that the larger the random isotope combination score, the better the performance of the random isotope combination.

[0071] In this embodiment, the isotope combination discrimination of each random isotope combination can be normalized using the maximum discrimination of the isotope combination to obtain a normalized discrimination, thereby reducing the computational complexity of the random isotope combination score and improving the screening efficiency of the target isotope combination. Specifically, the isotope combination discrimination of each random isotope combination can be divided by the maximum discrimination of the isotope combination to achieve normalization of the isotope combination discrimination. Similarly, the isotope combination resource consumption data of each random isotope combination can be normalized using the maximum resource consumption data of the isotope combination to obtain normalized resource consumption data. Further, based on the discrimination weight and the normalized discrimination, the score of the random isotope combination in terms of discrimination, i.e., the combination discrimination score, can be calculated. At the same time, based on the resource consumption weight and the normalized resource consumption data, the score of the random isotope combination in terms of resource consumption, i.e., the combination resource consumption score, can be calculated. Finally, the difference between the combination discrimination score and the combination resource consumption score is taken as the random isotope combination score of the random isotope combination.

[0072] It should be noted that, according to the embodiments of this application, the random isotope combination score of random isotope combinations can be calculated according to the following formula: , in, This represents the score for random isotope combinations. Indicates the discrimination weight. Indicates the weight of resource consumption. Indicates the distinguishability of isotope combinations. This indicates the maximum distinguishability of isotope combinations. This represents data on isotope combination resource consumption. This represents the maximum resource consumption data for isotope combinations.

[0073] In step S704 of some embodiments, after obtaining the random isotope combination score of each random isotope combination, a preset number of random isotope combinations are selected again and the above calculation steps of random isotope combination scores are repeated until a preset number of iterations is reached. Further, the random isotope combination scores of all random isotope combinations are compared and the random isotope combination with the largest random isotope combination score is taken as the target isotope combination.

[0074] Steps S701 to S704, as illustrated in the embodiments of this application, calculate the comprehensive score of random isotope combinations according to the weight allocation strategy to obtain the random isotope combination score. This can quantify the combination excellence of random isotope combinations, so as to intuitively screen out target isotope combinations from random isotope combinations, thereby improving the screening efficiency of target isotope combinations. Furthermore, based on the random isotope combination score, the candidate isotope set is iteratively processed to obtain the target isotope combination, which can avoid missing potential isotope combinations, thereby improving the reliability and accuracy of the target isotope combination.

[0075] Steps S601 to S603 as illustrated in the embodiments of this application can identify the extreme values ​​of random isotope combinations in terms of isotope combination distinguishability and isotope combination resource consumption data through maximum value screening. Furthermore, based on a pre-set weight allocation strategy, the maximum distinguishability of isotope combinations, and the maximum resource consumption data of isotope combinations, iterative screening of random isotope combinations can be performed to realize the continuous combination evolution of random isotope combinations, thereby eliminating combinations with low distinguishability and high cost from the random isotope combinations, so as to improve the source tracing efficiency of target isotope combinations for groundwater pollution.

[0076] Steps S501 to S504, as illustrated in the embodiments of this application, fully traverse the candidate isotope set through a random combination mechanism, which can avoid missing isotope combinations, thereby improving the reliability of the obtained target isotope combinations. Then, based on isotope distinguishability and isotope resource consumption data, the random isotope combinations are evaluated for combination differences and resource consumption is calculated, which can obtain isotope combination distinguishability and isotope combination resource consumption data. Then, based on isotope combination distinguishability and isotope combination resource consumption data, the random isotope combinations are combined and screened, so that the obtained target isotope combinations can have the advantages of high distinguishability and low cost, thereby improving the efficiency of groundwater pollution source tracing and reducing the resource consumption of groundwater pollution source tracing.

[0077] In step S106 of some embodiments, after identifying the target isotope combination, the target isotopes for tracing groundwater pollution can be obtained. Furthermore, the isotope abundance of polluted groundwater can be obtained by measuring the relative content of the target isotopes in the groundwater. By comparing the groundwater isotope abundance with the natural abundance of the pollution source isotopes, the source of the main pollutant polluting the groundwater can be determined, thereby improving the efficiency of tracing groundwater pollution.

[0078] This application provides data support for preliminary isotope screening by obtaining information on natural pollutants in groundwater and anthropogenic pollutants from pollution sources. Secondly, based on the information on natural and anthropogenic pollutants, traceable isotope screening is performed to obtain a candidate isotope set, narrowing the scope of isotope selection for groundwater pollution tracing and thus improving the efficiency of groundwater pollution tracing. Then, based on groundwater and pollution sources, isotope difference assessment is performed on the candidate isotope set to obtain isotope discrimination. Isotope resource consumption assessment is also performed on the candidate isotope set to obtain isotope resource consumption data. Based on the isotope discrimination and isotope resource consumption data, combined isotope screening is performed on the candidate isotope set, which can further screen out isotope combinations that are easy to distinguish pollutant sources and have low resource consumption, thereby improving the accuracy of groundwater pollution tracing and reducing resource consumption. Finally, based on the target isotope combination, groundwater pollution source tracing is performed, which can improve the accuracy of groundwater pollution tracing.

[0079] Please see Figure 8 This application also provides an isotope tracing device for groundwater pollution, which can implement the above-mentioned isotope tracing method for groundwater pollution. The device includes: The information acquisition module 801 is used to acquire information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources. The isotope screening module 802 is used to perform traceable isotope screening based on information on natural pollutants and anthropogenic pollutants to obtain a set of candidate isotopes. The difference assessment module 803 is used to assess the isotopic difference of candidate isotope sets based on groundwater and pollution sources, and obtain the isotopic discrimination. The cost assessment module 804 is used to assess the isotope resource consumption of the candidate isotope set and obtain isotope resource consumption data. The combination screening module 805 is used to screen candidate isotope sets based on isotope discrimination and isotope resource consumption data to obtain target isotope combinations. The pollution source tracing module 806 is used to trace the pollution sources of groundwater based on the target isotope combination.

[0080] The specific implementation method of the groundwater pollution isotope tracing device is basically the same as the specific implementation method of the groundwater pollution isotope tracing method described above, and will not be repeated here.

[0081] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the aforementioned method for isotope tracing of groundwater pollution. This electronic device can be any smart terminal, including tablet computers, in-vehicle computers, etc.

[0082] Please see Figure 9 , Figure 9 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes: The processor 901 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application. The memory 902 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 902 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 902 and is called and executed by the processor 901 to execute the isotope tracing method for groundwater pollution according to the embodiments of this application. The input / output interface 903 is used to implement information input and output; The communication interface 904 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). Bus 905 transmits information between various components of the device (e.g., processor 901, memory 902, input / output interface 903, and communication interface 904); The processor 901, memory 902, input / output interface 903, and communication interface 904 are connected to each other within the device via bus 905.

[0083] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for isotope tracing of groundwater pollution.

[0084] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0085] The isotope source tracing method, device, electronic equipment, and storage medium for groundwater pollution provided in this application embodiment acquire information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources. Based on the natural and anthropogenic pollutant information, traceable isotopes are screened to obtain a set of candidate isotopes. Based on groundwater and pollution sources, isotope difference assessment is performed on the candidate isotope set to obtain isotope discrimination. Isotope resource consumption assessment is performed on the candidate isotope set to obtain isotope resource consumption data. Based on the isotope discrimination and isotope resource consumption data, isotope screening is performed on the candidate isotope set to obtain a target isotope combination. Based on the target isotope combination, the pollution source of groundwater is traced.

[0086] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of this application, and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0087] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0088] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0089] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0090] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0091] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0092] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. The coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, or indirect coupling or communication connection between the apparatus or units, and may be electrical, mechanical, or other forms.

[0093] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0094] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0095] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0096] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A method for isotopic source tracing of groundwater pollution, characterized in that, The method includes: Obtain information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources; Based on the information on natural pollutants and anthropogenic pollutants, a traceable isotope screening is performed to obtain a set of candidate isotopes. Based on the groundwater and the pollution source, the isotopic difference assessment of the candidate isotope set is performed to obtain the isotopic discrimination. An isotope resource consumption assessment is performed on the candidate isotope set to obtain isotope resource consumption data, which includes the procurement cost of isotope standard materials, the operating cost of detection instruments, the human resource consumption for groundwater pollution source tracing, and the time resource consumption for groundwater pollution source tracing. Based on the isotope distinguishability and the isotope resource consumption data, isotope screening is performed on the candidate isotope set to obtain the target isotope combination. Based on the target isotope combination, the pollution source of the groundwater is traced. The method of evaluating isotopic differences in the candidate isotope set based on the groundwater and the pollution source to obtain isotopic discrimination includes: Based on the groundwater, the natural abundance of the candidate isotope set is calculated to obtain the natural abundance of groundwater isotopes. Based on the pollution source, the natural abundance of the candidate isotope set is calculated to obtain the natural abundance of the pollution source isotopes. Based on the candidate isotope set, the mean abundance of the groundwater isotopes and the pollution source isotopes is calculated to obtain the average natural abundance of the isotopes. Based on the preset isotope discrimination formula, the average natural abundance of the isotopes, the natural abundance of groundwater isotopes, and the natural abundance of pollution source isotopes, isotope differences are calculated on the candidate isotope set to obtain the isotope discrimination. The isotope discrimination formula is as follows: ， in, The isotopic distinguishability of the k-th candidate isotope in the candidate isotope set is represented by . This indicates the types and quantities of pollutants in the pollution source. This indicates the type number of the pollutant. This indicates the type number of the candidate isotope. The average natural abundance of the k-th candidate isotope is represented. The natural abundance of the k-th candidate isotope in the j-th pollutant; The process of isotope screening of the candidate isotope set based on the isotope distinguishability and the isotope resource consumption data to obtain the target isotope combination includes: The candidate isotopes are randomly combined to obtain random isotope combinations; Based on the isotope distinguishability, the combination difference of the random isotope combination is evaluated to obtain the isotope combination distinguishability. Based on the isotope resource consumption data, the resource consumption of the random isotope combination is calculated to obtain isotope combination resource consumption data. Based on the isotope combination distinguishability and the isotope combination resource consumption data, the random isotope combinations are combined and screened to obtain the target isotope combination.

2. The method according to claim 1, characterized in that, The step of filtering the random isotope combinations based on the isotope combination distinguishability and the isotope combination resource consumption data to obtain the target isotope combination includes: The maximum value of the isotope combination discrimination is selected by filtering the maximum value of the isotope combination; The maximum value of the resource consumption data of the isotope combination is filtered to obtain the maximum resource consumption data of the isotope combination; Based on a preset weight allocation strategy, the maximum distinguishability of the isotope combination, and the maximum resource consumption data of the isotope combination, the random isotope combination is iteratively screened to obtain the target isotope combination.

3. The method according to claim 2, characterized in that, The weight allocation strategy includes a distinguishability weight and a resource consumption weight. The step of iteratively filtering the random isotope combinations based on the preset weight allocation strategy, the maximum distinguishability of the isotope combination, and the maximum resource consumption data of the isotope combination to obtain the target isotope combination includes: Based on the discrimination weight, the maximum discrimination of the isotope combination, and the discrimination of the isotope combination, the discrimination score of the random isotope combination is predicted to obtain the combination discrimination score. Based on the resource consumption weight, the maximum resource consumption data of the isotope combination, and the resource consumption data of the isotope combination, the resource consumption score of the random isotope combination is predicted to obtain the combined resource consumption score. Based on the combined discrimination score and the combined resource consumption score, the score difference is calculated to obtain the random isotope combination score; Based on the random isotope combination score, the candidate isotope set is iteratively processed to obtain the target isotope combination.

4. The method according to any one of claims 1-3, characterized in that, The process involves screening traceable isotopes based on the information about natural pollutants and anthropogenic pollutants to obtain a candidate isotope set, including: Based on the information on natural pollutants and anthropogenic pollutants, traceable elements are screened to obtain a set of candidate elements; Based on the information on natural pollutants and anthropogenic pollutants, isotope supplementation is performed on the candidate element set to obtain the candidate isotope set.

5. An isotope tracing device for groundwater pollution, used to implement the isotope tracing method for groundwater pollution as described in any one of claims 1-4, characterized in that, The device includes: The information acquisition module is used to acquire information on natural pollutants in groundwater and information on anthropogenic pollutants from pollution sources. An isotope screening module is used to perform traceable isotope screening based on the information of natural pollutants and the information of anthropogenic pollutants to obtain a set of candidate isotopes. The difference assessment module is used to assess the isotopic difference of the candidate isotope set based on the groundwater and the pollution source, and obtain the isotopic discrimination. The cost assessment module is used to assess the isotope resource consumption of the candidate isotope set and obtain isotope resource consumption data. The combination screening module is used to screen the candidate isotope set based on the isotope distinguishability and the isotope resource consumption data to obtain the target isotope combination. The pollution source tracing module is used to trace the pollution source of the groundwater based on the target isotope combination.

6. An electronic device, characterized in that, The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the isotope source tracing method for groundwater pollution as described in any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the isotope source tracing method for groundwater pollution as described in any one of claims 1 to 4.

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