Heavy Metals in the Ground Surface Dust and Agricultural Soil in Artisanal and Medium-scale Zinc Smelting Area in Northwest Guizhou Province, China
1 State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
2 Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
3 Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China
4 Hei Longjiang Institute of Geological survey, Harbin 150036, China
5 Graduate School of Chinese Academy of Sciences, Beijing 100049, China
Twenty heavy metals in the ground surface dust and agricultural soil in three different areas, i.e., a former artisanal zinc smelting area, a medium-scale zinc smelting area, and a control area, in Guizhou province southwest China, were investigated to reveal the pollution status of these heavy metals. The results showed that the pollution was most serious in the artisanal zinc smelting area, followed by the medium-scale zinc smelting area, while the control area was relatively clean. Zinc smelting activities had caused environmental contamination for elements such as Ag, As, Bi, Cd, Cu, Hg, In, Pb, Sb, Sn, Zn. Whereas, Co, Cr, Ga, Mo, Ni, Sc, Th, Tl, V were in the natural levels, hinting they were irrelevant to the zinc smelting activities. Concentrations of most heavy metals that come from the zinc smelting were obviously higher in the ground surface dust than that in the agricultural soil. And Cd, Pb, Zn, Ag were the four elements that affected by the zinc smelting activities most.
Key words: Heavy metals / zinc smelting / pollution assessment / dust / soil
© Owned by the authors, published by EDP Sciences, 2013
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