农业环境科学学报2012，Vol.31Issue(11)：2236-2241,6.
贵州草海沉积物重金属污染特征及潜在生态风险分析
Pollution Characteristics and Potential Ecological Risk Assessment of Heavy Metals in Sediments of Caohai in Guizhou Province,China
摘要
Abstract
In order to investigate the pollution and accumulation characteristics, sediments from different directions in Caohai wetland were collected and concentrations of Zn, Cr, Pb, Cu, As, Cd and Hg in sediments were detected .Meanwhile, the spatial distribution characteristics of heavy metals in sediments were analyzed and the potential ecological risks were evaluated with RI(The Potential Ecological Risk Index). The results showed the order of the concentrations of heavy metals in the sediments was Zn>Cr>Pb>Cu>As>Cd>Hg and the spatial distribution of decrease from center to edge. The order of pollution level of different heavy metals was Cd>Hg>Zn>Pb>As>Cu>Cr. The potential ecological risk index of heavy metals in sediments exceed 150 due to the high concentrations of Cd. And, the results also showed serious degree of pollution of most sampling points.关键词
草海/沉积物/重金属/潜在生态风险Key words
Caohai/ sediments/ heavy metals/ potential ecological risk分类
资源环境引用本文复制引用
林绍霞,张清海,郭媛,欧阳勇,林昌虎..贵州草海沉积物重金属污染特征及潜在生态风险分析[J].农业环境科学学报,2012,31(11):2236-2241,6.基金项目
贵州省社会发展攻关项目(黔科合SY字[2010]3094号) （黔科合SY字[2010]3094号）
贵州省教育人才省长资金项目(黔省专合字[2011]16号) （黔省专合字[2011]16号）
贵州科学院青年基金项目(黔科院J合字[2010]011号) （黔科院J合字[2010]011号）
