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| Source apportionment and evaluation of potentially toxic elements, P and Se, for paddy soils in the western margin of Chengdu Plain, China |
| Received:March 24, 2022 |
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| KeyWord:paddy soil;potentially toxic elements;heavy metal contamination;source apportionment;risk evaluation |
| Author Name | Affiliation | E-mail | | ZHANG Junji | Chengdu Center of China Geological Survey, Chengdu 610081, China | | | SHI Zeming | Geochemistry Department, Chengdu University of Technology, Chengdu 610059, China
Sichuan Province Key Laboratory of Nuclear Techniques in Geosciences, Chengdu 610059, China | shizm@cdut.edu.cn | | LIAO Rong | Geochemistry Department, Chengdu University of Technology, Chengdu 610059, China | | | WANG Yu | Geochemistry Department, Chengdu University of Technology, Chengdu 610059, China | | | WANG Xinyu | Geochemistry Department, Chengdu University of Technology, Chengdu 610059, China
Sichuan Province Key Laboratory of Nuclear Techniques in Geosciences, Chengdu 610059, China | |
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| Abstract: |
| An experment was conducted to investigate the effects of risk elements on rice soils in Chengdu Plain. Soils were collected at depths of 0 to 20 cm on the western margin of the Chengdu Plain. The sources of Ni, Cr, Cu, Pb, Zn, As, Cd, Hg, P, and Se in paddy soils were studied using statistical descriptive analysis, cluster analysis, principal component analysis, and GIS methods, and the ecological risks posed by heavy metals were evaluated. The results showed that Ni, Cr, and Cu were not enriched. Pb, Zn, and As were enriched, along with Cd, Hg, P, and Se. The area that was strongly influenced by human activities was mainly distributed between Rivers I and J and along River L. The Cu, Cr, Ni, and Se were mainly from the parent rock. Phosphogypsum influenced Pb and As. Hg and P were influenced by residential waste. Zn and Cd levels were controlled by chemical activities. Due to the influence of the high Cd content in cultivated soils, the Nemerow pollution index was 1.20, indicating that the pollution level of soils was mild. |
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