Evaluation of ecological risk and primary empirical research on heavy metals in polluted soil over Xiaoqinling gold mining region,Shaanxi,China

作     者：吴耀国 徐友宁 张江华 胡思海 

作者机构：Department of Applied ChemistryNorthwestern Polytechnical University Xi'an Institute of Geology and Mineral Resources 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2010年第20卷第4期

页      面：688-694页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 120405[管理学-土地资源管理] 

基　　金：Project(1212010741003)supported by the Ministry of Land and Resources of China Project(SJ08-ZT08)supported by the Natural Science Foundation of Shaanxi Province,China Project(NCET-07-0694)supported by Program for University Talents in the NewCentury,China 

主　　题：gold mining activity soil pollution heavy metal potential ecological risk 

摘      要：Soil,crop and residents hair over Xiaoqinling gold mining region,China,which was selected as a case study,were sampled and analyzed for Hg,Cd,Pb,Cu,Cr,As and Zn *** concentrations of heavy metals in soil or crop and hair samples were used to assess their potential ecological risks,or to find the responses to these metals as evidences to prove the potential risk was coming down to observed harm,*** results showed that,these metals in soil were ranked by severity of ecological risk as HgCdPbCuCrAsZn,based on their single-element *** the view of the potential ecological risk indexes,of all soil samples,about half had significantly high or high potential ecological risk,which covered more than 74%of the studied *** of the risks were 97.41%from Hg,Pb and Cd,especially,84.37%from *** the single-element and potential ecological risk indexes indicated that,the ecological risk grades had a special spatial characteristic,and increased from northwest to southeast *** was agreed with the spatial distribution of the strength in gold mining activities over the studied *** concentrations of Hg and Pb were higher than their relative backgrounds in the corps,and were even 9.48 and 25.09 times higher than their relative backgrounds in residents hair,*** these showed that the heavy metals in the soil had a high potential ecological risk,especially,had been affecting these crops growing and yield,and even the residents health through food ***,these metals potential ecological harm had been coming down to observed harm to the ecology.