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典型铜尾矿库周边土壤重金属复合污染特征
引用本文:王志楼,谢学辉,王慧萍,郑春丽,柳建设.典型铜尾矿库周边土壤重金属复合污染特征[J].生态环境学报,2010,19(1).
作者姓名:王志楼  谢学辉  王慧萍  郑春丽  柳建设
作者单位:东华大学环境科学与工程学院,上海,201620
基金项目:全国优秀博士学位论文作者专项资金项目,国家自然科学基金项目,上海市重点学科建设项目 
摘    要:应用了Hakanson潜在生态风险指数法、相关分析法、主成分分析法对德兴铜矿尾砂库周边土壤Cu、Zn、Ni、Pb、Cr和Cd复合污染特征进行研究,定量确定了铜尾矿库潜在生态风险程度、主要污染因子和潜在生态风险因子。结果表明:铜矿尾矿库周边土壤受到不同程度的重金属污染,该地区平均潜在生态风险污染指数超过600,具有极高的潜在生态风险;各重金属潜在生态风险参数由高至低顺序为Cd、Cu、Pb、Ni、Cr、Zn,其中Cd为主要潜在生态风险因子。进一步通过主成分分析法研究了重金属的污染特性,发现前3个主成分贡献率分别为:65.033%、18.825%、6.243%,第一主成分反映了Zn、Ni、Cr的信息,第二主成分反映了Cu和Cd的信息,第三主成分反映Pb的信息。

关 键 词:重金属  复合污染  铜尾矿库  潜在生态风险评价  主成分

Combined pollution character of heavy metals in soils around a typical copper tailing
WANG Zhilou,XIE Xuehui,WANG Huiping,ZHENG Chunli,LIU Jianshe.Combined pollution character of heavy metals in soils around a typical copper tailing[J].Ecology and Environment,2010,19(1).
Authors:WANG Zhilou  XIE Xuehui  WANG Huiping  ZHENG Chunli  LIU Jianshe
Abstract:Hakanson potential ecological risk index techniques, correlation analysis, principal component analysis (PCA) were ap-plied to estimate the character of heavy metal combined contamination (Cu, Zn, Ni, Pb, Cr, Cd). The degree of potential ecological risks in soils around copper tailing, the main factors of environment pollution and potential ecological risks were determined. The results showed that soils around copper mine tailing were contaminated at different degrees with heavy metals. The order of pollution extents was Cd>Cu>Pb>Ni>Cr>Zn, Cd was the main factor of potential ecological risks. The average RI (risk index) in this region was above 600. The results of principal component analysis (PCA) showed that, the first three components accounted for 65.033%, 18.825% and 6.243% of the total variance, the fLrSt principal component mainly reflects the enrichment of Zn, Ni, Cr, the second is Cu and Cd, while the third is Pb.
Keywords:heavy metals  combined pollution  copper tailing  assessment of potential ecological risk  principal component analysis
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