摘要
对湘江(衡阳段)10个断面18个采样点的表层沉积物重金属(Cd、Hg、Pb、As、Cr、Zn、Cu)进行监测和分析,采用Lars Hanson潜在生态危害指数法对各种重金属的生态风险进行评价。结果表明,湘江(衡阳段)表层沉积物中各重金属潜在生态危害系数大小排序为:Cd>Hg>Pb>As>Cu>Zn>Cr。多种重金属的综合潜在生态风险指数RI为913.4,表明湘江(衡阳段)沉积物重金属污染属于很强的生态危害。
Based on the data of heavy metals（ Cu, Zn, As, Hg, Cd, Cr, Pb） in the fluvial sediment of hengyang section of Xiang, including 18 sites in 10 sections, the potential ecological risk of heavy metals was analyzed and assessed by Lars Hanson method. The results showed that order of heavy metal potential ecological risk factor was Cd 〉 Hg 〉 Pb 〉 As 〉 Cu 〉 Zn 〉 Cr in surface sediment of Xiang river （ Hengyang section）. The comprehensive potential ecological risk index of a variety of heavy metals was 913.4 RI to show a high ecological risk of the sediment of the Xiang River （ Hengyang section）.
出处
《环境监测管理与技术》
北大核心
2008年第5期25-27,共3页
The Administration and Technique of Environmental Monitoring
基金
国家高技术研究发展计划"八六三"基金资助项目(2004AA649370)
国家杰出青年科学基金资助项目(50425927
50225926)
湖南省自然科学基金资助项目(07JJ6013)
湖南省重点学科基金资助项目
关键词
沉积物
重金属污染
生态风险评价
湘江(衡阳段)
Sediment
Heavy metal pollution
Ecological risk assessment
Xiang River （Hengyang section ）
