磁湖底泥重金属污染与潜在生态风险评价  

ASSESSMENT ON HEAVY METAL POLLUTION IN THE SEDIMENT OF CIHU LAKE AND POTENTIAL ECOLOGICAL RISK

作　　者：肖文胜[1,2] 杨开[1] 郭建林[2] 钟松[2] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]黄石理工学院环境科学与工程学院,湖北黄石435003

出　　处：《环境工程》2008年第S1期320-324,共5页Environmental Engineering

基　　金：湖北省自然基金项目(2007ABA242);湖北省高等学校优秀中青年科技创新团队项目(T200709)资助

摘　　要：为解磁湖底泥中重金属含量、污染程度以及各污染物的潜在生物毒性,对磁湖8个底泥样品中6种金属元素(Cu、Pb、Ni、As、Hg、Cd)进行了分析研究。利用地累积指数法和单因子评价法对底泥中的重金属污染程度进行了综合性的评价。利用潜在生态风险指数法对磁湖底泥中的重金属潜在生态风险进行了评价,结果表明,磁湖底泥中主要的重金属污染物是Cd和Cu,其次是Pb、As、Ni、Hg。各重金属的潜在生态风险从大到小的排列次序为:Cd>As>Cu>Pb>Hg。In order to know the heavy metals content and degree of the potential ecological risk in the sediment of Cihu Lake,six elements(Cu,Pb,Ni,As,Hg and Cd)in eight sediment samples were studied.The index of geoaccumulation and the index of single factor were used to evaluate the heavy metals pollution of Cihu Lake.The results showed that Cd and Cu were the main heavy metal pollutions,followed by Pb,As,Ni and Hg.According to the potential ecological risk index,the order of ecological risk to Cihu Lake is:Cd>As>Cu>Pb>Hg,which is arranged from highest to lowest degrees.

关 键 词：磁湖 底泥 重金属 地积累指数潜在生态风险 

分 类 号：X820.4[环境科学与工程—环境工程]