摘要
对小江消落区土壤沉积物进行采集,用原子吸收光谱法测定土样中的Pb、Cu、Cr、Cd、Zn等重金属的含量,用单因子指数法和Ha-kanson生态风险指数法评价了土样中重金属综合污染效应。结果表明,小江消落区主要的重金属污染因子为Pb,生态风险影响因子顺序为Pb>Cd>Zn>Cr>Cu。潜在生态风险因子大小顺序为Cd>Cu>Zn>Cr>Pb,潜在生态风险指数RI平均值为48.36,小江消落区大部分断面处于重金属中等潜在生态风险。
The soil sediments in Xiaojiang Drawdown Area were collected and the content of heavy metals such as Pb,Cu,Cr,Cd and Zn in soil samples was determined by using atomic absorption spectrometry.The compound pollution effects of heavy metals in soil samples were evaluated by using single factor index method and Hakanson ecological risk index method.The results showed that the main pollution factor in Xiaojiang Drawdown Area was Pb.The sequence of the ecological risk influence factors was Pb Cd Zn Cr Cu and the potential ecological risks was Cd Cu Zn Cr Pb.The average of potential ecological risk（RI） was 48.36.The most sections of Xiaojiang Drawdown Area had the middle potential ecological risks of heavy metals.
出处
《安徽农业科学》
CAS
北大核心
2010年第4期1943-1944,2011,共3页
Journal of Anhui Agricultural Sciences
基金
国家水体污染控制与治理重大专项子课题(2009ZX07104-003-02)
重庆市科委基金项目(CSTC2008BB7363)
重庆市教委基金资助项目
关键词
土壤沉积物
重金属
潜在生态风险
Soil sediment
Heavy metals
Potential ecological risk
