A geochemical survey of trace elements in agricultural and non-agricultural topsoil in Dexing area,China |
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| Authors: | Yanguo Teng Shijun Ni Jinsheng Wang Rui Zuo Jie Yang |
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| Institution: | 1. College of Water Sciences, Beijing Normal University, Beijing 100875, China;2. Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China;3. Department of Geochemistry, Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | In China, soil pollution is very serious, which has jeopardized the ecology, food safety, the people's health, and even the sustainable development of agriculture. In order to investigate the soil pollution situation, a total of 874 agricultural and non-agricultural topsoil samples were collected from Dexing area, northeast of Jiangxi Province, China. The total elemental concentrations of 17 elements (As, Hg, Mo, Cd, Cr, Zn, Cu, Mn, Ti, Pb, Fe, Ca, K, Si, Al, Mg, and Na) were determined. The geochemical background and threshold was predicted with the method of the median ± median absolute deviation (MAD). The agricultural soil median concentration of trace elements was similar to that of the non-agricultural soil. In contrast to Jiangxi soil background of trace elements, the geochemical background of the study area was obviously higher. The maps of the pollution indices for As, Cd, Cr, Cu, Hg, Mn, Mo, Pb, Ti and Zn of non-agricultural soil and agricultural soils in the study area, showed that the highest level of pollution is distributed near and along the Lean River, especially in the neighboring and surrounding Dexing and Leping mining area. |
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| Keywords: | Geochemical survey Trace element Geochemical background Element assemblage Topsoil pollution |
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