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| The Geochemical Characteristics of Heavy Metals in Soils in the Panzhihua V-Ti Magnetite Mine and the Pollution Evaluation |
| TUO Xian-guo1, XU Zheng-qi1, TENG Yan-guo2, MU Ke-liang1 |
1. Chengdu University of Technology, Chengdu 610059, China;
2. Beijing Normal University, Beijing 100875, China |
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Abstract In order to find out the geochemical characteristics and the pollution degrees of heavy metals in soils in the Panzhihua V-Ti Magnetite mine,samples of surface soils and soils from two vertical profiles in the area have been collected in this study.Twelve elements (Cu,Pb,Zn,Ti,V,Co,Ni,As,Cd,Cr,Hg and Mn) are analyzed for these samples by using several methods respectively.Then the distribution characters of heavy metals in soils have been discussed and the polluting indexes of heavy metals have been evaluated.Results show that the surface soils in the most area of the Panzhihua V-Ti Magnetite mine are intermediately polluted by heavy metals,with high pollution locally and extremely high pollution occasionally.The highest polluting coefficients are decreased from those of Co,V,Cu,Cd and Ti,to those of Zn,Mn,Ni and Cr,to those of Hg and Pb,and to that of As.According to the pollution loading indexes of soils for various areas,the soils surrounding the dump and near the lower reaches of Zhujiabao Mining area are quite severely polluted,whereas the soils in the areas far away from the mine or in the upper reaches of the mine are only slightly polluted.
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Received: 06 December 2006
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