Title:
SOIL CD/PB COMPOSITE POLLUTION BIMETALLIC ISOTOPE SOURCE ANALYSIS METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/072011
Kind Code:
A1
Abstract:
A farmland soil Cd/Pb composite pollution bimetallic isotope source analysis method, comprising the following steps: separately collecting a soil sample and a risk source sample by means of a sample collection device; separately measuring Cd and Pb isotope ratios of the soil sample and the risk source sample; performing plotting by using the Cd and Pb isotope ratios of the soil sample and the risk source sample as coordinates to obtain an isotope ratio projection plot; identifying a pollution end element of polluted farmland soil by means of the isotope ratio projection plot to obtain a pollution end element identification result, and then carrying out pollution end element confirmation; and calculating a relative contribution rate of the pollution end element to obtain an isotope source analysis result. In the bimetallic isotope source analysis method, using the two metal isotopes, Cd and Pb, to restrict and verify one another solves the problem of poor analysis accuracy caused by similar or overlapping sample isotope values and isotope fractionation, and achieves the accurate identification and quantitative analysis of Cd/Pb heavy metal pollution sources in farmland soil.
Inventors:
XIA YAFEI (CN)
LIU CHENGSHUAI (CN)
GAO TING (CN)
LIU YUHUI (CN)
LIU CHENGSHUAI (CN)
GAO TING (CN)
LIU YUHUI (CN)
Application Number:
PCT/CN2022/127186
Publication Date:
May 04, 2023
Filing Date:
October 25, 2022
Export Citation:
Assignee:
INST GEOCHEMISTRY CAS (CN)
International Classes:
G01N27/626
Foreign References:
| CN114062476A | 2022-02-18 | |||
| CN112698005A | 2021-04-23 | |||
| CN112179974A | 2021-01-05 | |||
| US20150079686A1 | 2015-03-19 | |||
| US20190064135A1 | 2019-02-28 |
Other References:
WEN HANJIE, ZHANG YUXU, CLOQUET CHRISTOPHE, ZHU CHUANWEI, FAN HAIFENG, LUO CHONGGUANG: "Tracing sources of pollution in soils from the Jinding Pb–Zn mining district in China using cadmium and lead isotopes", APPLIED GEOCHEMISTRY, PERGAMON, AMSTERDAM, NL, vol. 52, 1 January 2015 (2015-01-01), AMSTERDAM, NL , pages 147 - 154, XP093061728, ISSN: 0883-2927, DOI: 10.1016/j.apgeochem.2014.11.025
CLOQUET C., J. CARIGNAN, G. LIBOUREL, T. STERCKEMAN, AND E. PERDRIX: "Tracing Source Pollution in Soils Using Cadmium and Lead Isotopes", ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 40, no. 8, 22 March 2006 (2006-03-22), pages 2525 - 2530, XP093061731
YALI PU, TU YAOREN, YOU ZHENFENG, DUAN YANPING, CAO SHUANGSHUANG: "Application of Pb-Zn isotopes in sediment source apportionment of heavy metal pollution: review and prospect", ENVIRONMENTAL CHEMISTRY, vol. 36, no. 3, 1 March 2017 (2017-03-01), pages 581 - 590, XP093061727
CLOQUET C., J. CARIGNAN, G. LIBOUREL, T. STERCKEMAN, AND E. PERDRIX: "Tracing Source Pollution in Soils Using Cadmium and Lead Isotopes", ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 40, no. 8, 22 March 2006 (2006-03-22), pages 2525 - 2530, XP093061731
YALI PU, TU YAOREN, YOU ZHENFENG, DUAN YANPING, CAO SHUANGSHUANG: "Application of Pb-Zn isotopes in sediment source apportionment of heavy metal pollution: review and prospect", ENVIRONMENTAL CHEMISTRY, vol. 36, no. 3, 1 March 2017 (2017-03-01), pages 581 - 590, XP093061727
Attorney, Agent or Firm:
HUAXUE IP AGENCY CO., LTD. (CN)
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