Watershed-scale assessment of arsenic and metal contamination in the surface soils surrounding Miyun Reservoir,Beijing, China |
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| Authors: | Wei Luo Yonglong Lu Yan Zhang Wenyou Fu Bin Wang Wentao Jiao Guang Wang Xiaojuan Tong John P Giesy |
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| Institution: | 1. State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;2. College of Forestry, Beijing Forestry University, Beijing 100083, China;3. Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada;4. Zoology Dept., Center for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA |
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| Abstract: | Concentrations of As and selected metals were determined in surface soils of the Miyun Reservoir watershed of Beijing, China. The degree to which concentrations of As and metals exceeded the corresponding background concentration of soils was: Cr > Cu > Zn > As > Ni with no apparent anthropogenic contamination with Cd and Pb. Based on the results of a combination of multivariate statistics and geostatistical analysis, greater concentrations of Cr and Ni in soils were determined to be primarily from iron ore mining near where the Chaohe River enters the northeast portion of the reservoir. Agricultural activities were responsible for the observed elevated concentrations of Cu and Zn in soils. Relatively great concentrations of As were found in soils near the upstream regions of the Baihe River in Chicheng County where small gold mining activities have taken place. The greatest potential for adverse effects of Cr and Cu occurred along the eastern shore of Miyun Reservoir. |
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