Pollution of Heavy Metals in the Sediments from the Lower Reaches of the Yangtze River and Its Potential Ecological Risk Assessment
详细信息
- 责任者：Yang Hui (Nanjing Center ; China Geological Survey ; Nanjing 210016 ; China) ; Chen Guoguang
- 刊名：Earth and Environment
- 出版年：2013
- 卷期：41(2)
- 关键词：湖泊沉积物 ; lake sediments ; 重金属 ; heavy metals ; 长江 ; Yangtze River
- 页码：p.160-165
- 图表：illus., 4 tables, 14 refs.
- 分类号：1800
- issnNo：ISSN1672-9250
- isbnNo：CN52-1139/P
摘要
The pollution characteristics of As,Cd,Cu,Hg,Zn,Ni,Cd and Pb in the sediments of the Chaohu Lake,Poyang Lake and Taihu lake were analyzed,and the potential ecological risk of heavy metal pollution was assessed using Hakanson ecological risk index.The results showed that spatial variations in Hg and Cd contents were significantly higher than those in reference values.Potential ecological risk assessment results showed that the ecological risk of Hg and Cd produced by harmful levels was higher in the three lakes,which were a major contributor to ecological risk hazard index,the ecological risk follows the order of Poyang Lake> Taihu lake >Chaohu Lake,the ecological environments of the Chaohu Lake and Taihu lake were better,and that of the Poyang Lake was relatively poor.
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