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Pollution Assessment of Heavy Metals in Soil around Dabaoshan Polymetallic Ore Deposit

ZHENG Jia-jia1,JIANG Xiao1,2,ZHANG Xiao-jun1(1.Faculty of Earth Resource,China University of Geosciences,Wuhan 430074,China;2.The Sixth Geology Team of Xinjiang Bureau of eology and Mineral Resource,Xinjiang 839000,China)  
52 soil samples were obtained from Dabaoshan ore deposit and the surrounding regions(zoneⅠ,Ⅱ,Ⅲ and Ⅳ).Aiming at overall study at different sampling points and districts,the author introduced Nemerow Index and Comprehensive Pollution Load method on the basis of single factor index of heavy metals contamination in the study area.The level of heavy metal contamination in this area varies,with Cr,Ni,Hg,Sn,Pb,Zn,As as low pollution or not,and Cu,Cd quite high.Studies on heavy metals of the four districts indicate that the pollution in zoneⅣ is most serious,then followed by zoneⅢ and Ⅰ,and zoneⅡis relatively light.
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