CN111766368A - Heavy metal source analysis method for lead isotope - Google Patents
Heavy metal source analysis method for lead isotope Download PDFInfo
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- CN111766368A CN111766368A CN202010621303.0A CN202010621303A CN111766368A CN 111766368 A CN111766368 A CN 111766368A CN 202010621303 A CN202010621303 A CN 202010621303A CN 111766368 A CN111766368 A CN 111766368A
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 12
- 238000004458 analytical method Methods 0.000 title abstract description 15
- 238000011160 research Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 238000001228 spectrum Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
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- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Combustion & Propulsion (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a heavy metal source analysis method of a lead isotope, which comprises the following steps: s1, collecting a main sample in a research area and analyzing the lead isotope composition of the main sample as a source analysis main body; s2, collecting indication samples at characteristic pollution sources around the research area; s3, detecting Pb isotope characteristics in the indication sample through a detection device in a laboratory; s4, screening Pb isotope data which are the same as the Pb isotope data in the indicating sample from the historical literature report data by using the detection characteristics of the indicating sample as a basis; and S5, comparing the Pb isotope characteristics of the source solution main body with the Pb isotope data screened from the historical data, and finding the Pb source.
Description
Technical Field
The invention relates to the field of environmental pollution research, in particular to a heavy metal source analysis method for a lead isotope.
Background
Metal elements in the environment are widely concerned due to the characteristics of high toxicity, difficult degradation and easy biological enrichment through the food chain. Lead is considered to be a toxic metal element that has an effect on human health and can be bio-amplified through the food chain and food network. Analytical research on the source of lead in the environment has been a hot issue in environmental research for the past decades. The heavy metal traceability analysis by utilizing the lead isotope is an effective and accurate mode. At present, two analysis methods mainly exist, one is to perform isotope detection on a possible pollution emission source while collecting a sample in a research area, and then compare isotope composition characteristics of the two to obtain a pollution source explanation (as shown in fig. 1), and the method needs intensive distribution, needs to analyze potential pollution sources fully, and is huge in cost and tedious in work. The other method is that after the composition of lead isotopes in samples in a research area is detected, the lead isotope compositions emitted by various pollution sources in previous reports are compared and analyzed (as shown in figure 2), but the selection and the acquisition of the lead isotope spectrum components of the pollution sources are always in the process of complementing corresponding pollution source spectrum complete sets, and the summary of the obtained sources is more general; for example, automobile exhaust, different types of oil products, and different operating modes of automobiles may all bring certain differences.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for analyzing a heavy metal source of a lead isotope, which reduces the workload and improves the accuracy.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method for analyzing a heavy metal source of a lead isotope comprises the following steps:
s1, collecting a main sample in a research area and analyzing the lead isotope composition of the main sample as a source solution main body;
s2, collecting indication samples at characteristic pollution sources around the research area;
s3, detecting Pb isotope characteristics in the indication sample through a detection device in a laboratory;
s4, screening Pb isotope data which are the same as the Pb isotope data in the indicating sample from the historical literature report data by using the detection characteristics of the indicating sample as a basis;
and S5, comparing the Pb isotope characteristics of the source analysis subject with the Pb isotope data screened from the historical data, and finding the Pb source.
Further, the Pb isotope is characterized by a different isotope of Pb element (b204Pb、206Pb、207Pb、208Pb).
Compared with the prior art, the invention has the advantages and positive effects that:
the method acquires a main sample of a research area, collects several groups of samples of potential pollution sources, uses lead isotopes of the main sample of the research area obtained by laboratory analysis as a source analysis main body, uses a pollution source area sample synchronously acquired as a source spectrum selection reference, and selects a reasonable reference basis from other researches according with the corresponding lead isotope spectra of the pollution sources, thereby greatly reducing the workload and the test cost compared with the single detection of the integral spectrum characteristics of the pollution sources, and having more objective reference conditions than the blind selection of the source spectrum basis directly from historical research documents.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first diagram of a heavy metal traceability analysis logic framework in the prior art;
FIG. 2 is a diagram of a heavy metal traceability analysis logic framework II in the prior art;
FIG. 3 is a logical framework diagram of the present invention;
FIG. 4 is a graph of the literature results data of this example.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.
As shown in fig. 3, the present embodiment discloses a method for analyzing a heavy metal source of a lead isotope, including the following steps:
s1, collecting a main sample in a research area and analyzing the lead isotope composition of the main sample as a source analysis main body;
s2, collecting indication samples at characteristic pollution sources around the research area; indicating that the specimen represents a small number of characteristic samples collected to meet requirements to distinguish a broad, fully collected common sample;
s3, detecting Pb isotope characteristics in the indication sample through a detection device in a laboratory; the Pb isotope is characterized by the content ratio of different isotopes in Pb;
s4, screening Pb isotope data which are the same as the Pb isotope data in the indicating sample from the historical literature report data by using the detection characteristics of the indicating sample as a basis; the historical data is isotope data information published in other researches such as literature and the like;
and S5, comparing the Pb isotope characteristics of the source analysis subject with the Pb isotope data screened from the historical data, and finding the Pb source.
Taking a certain research as an example, the test result of the collected sample and the result of obtaining the Pb isotope spectrum by the literature are shown in FIG. 4, and it can be seen from the results that the qualified accuracy is difficult to guarantee only by comparing the matching degree of the result measured by a single research with the original research.
Table 1 is a data table of the detection results of the indicating samples
Table 1 shows the detection results of the indicator sample in the present invention, and if the present invention logic is adopted, the results of the existing research are compared with the actually measured characteristics of the isotope of the Pb pollution source, and the reference is performed, so that the accuracy and the scientificity are greatly improved.
The method acquires a main sample of a research area and collects several groups of samples of potential pollution sources, the main sample lead isotope of the research area obtained by laboratory analysis is used as a source solution main body, the source spectrum is selected according to a pollution source area sample synchronously acquired as an indication sample, and a reasonable reference basis is selected from corresponding researches according with the pollution source lead isotope spectrum.
Claims (2)
1. A method for analyzing a heavy metal source of a lead isotope, characterized by comprising: the method comprises the following steps:
s1, collecting a main sample in a research area and analyzing the lead isotope composition of the main sample as a source solution main body;
s2, collecting indication samples at characteristic pollution sources around the research area;
s3, detecting Pb isotope characteristics in the indication sample through a detection device in a laboratory;
s4, screening Pb isotope data which are the same as the Pb isotope data in the indicating sample from the historical literature report data by using the detection characteristics of the indicating sample as a basis;
and S5, comparing the Pb isotope characteristics of the source solution main body with the Pb isotope data screened from the historical data, and finding the Pb source.
2. The method for analyzing a heavy metal source for a lead isotope according to claim 1, wherein: the Pb isotope is characterized by the content ratio of different isotopes in Pb element.
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| CN202010621303.0A CN111766368A (en) | 2020-06-30 | 2020-06-30 | Heavy metal source analysis method for lead isotope |
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| CN202010621303.0A CN111766368A (en) | 2020-06-30 | 2020-06-30 | Heavy metal source analysis method for lead isotope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595834A (en) * | 2020-12-03 | 2021-04-02 | 农业农村部环境保护科研监测所 | Soil heavy metal tracing and pollution path determining method |
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| CN110837978A (en) * | 2019-11-15 | 2020-02-25 | 安徽国祯环境修复股份有限公司 | Tracing investigation method for heavy metal pollution of bottom mud of river channel around mine enterprise |
| CN111222216A (en) * | 2018-11-08 | 2020-06-02 | 中国石油化工股份有限公司 | Pollutant source analysis method |
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- 2020-06-30 CN CN202010621303.0A patent/CN111766368A/en active Pending
Patent Citations (3)
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| CN111222216A (en) * | 2018-11-08 | 2020-06-02 | 中国石油化工股份有限公司 | Pollutant source analysis method |
| CN109920492A (en) * | 2019-03-26 | 2019-06-21 | 中国水利水电科学研究院 | A kind of method of plumbic harm parsing in water body deposit |
| CN110837978A (en) * | 2019-11-15 | 2020-02-25 | 安徽国祯环境修复股份有限公司 | Tracing investigation method for heavy metal pollution of bottom mud of river channel around mine enterprise |
Non-Patent Citations (6)
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| JUNG SUN CHAE等: "Source identification of heavy metal contamination using metal association and Pb isotopes in Ulsan Bay sediments, East Sea, Korea", 《MARINE POLLUTION BULLETIN》 * |
| WENYOU HU等: "Source identification of heavy metals in peri-urban agricultural soils of southeast China: An integrated approach", 《ENVIRONMENTAL POLLUTION》 * |
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| 韩存亮等: "土壤重金属污染源解析主要方法及其应用", 《广东化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595834A (en) * | 2020-12-03 | 2021-04-02 | 农业农村部环境保护科研监测所 | Soil heavy metal tracing and pollution path determining method |
| CN112595834B (en) * | 2020-12-03 | 2022-11-04 | 农业农村部环境保护科研监测所 | Soil heavy metal tracing and pollution path determining method |
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