Pollution of heavy metals in the sediments from Qingshui Stream in Chongqing and its potential ecological risk assessment
重庆市清水溪河流沉积物重金属污染及潜在生态风险评价

Through analyzing the contents of the typical heavy metal pollutants(Cd,Cr,Cu,Pb and Zn) in the sediments of 18 sample sites from Qingshui Stream catchment,this paper used the index techniques of single factor and Hakanson ecological risk to quantitatively determine the extent of pollution and the potential ecological risks of heavy metal in the sediments of Qingshui Stream.The results showed that: heavy metal pollution in Qingshui Stream catchment was very serious by integrated pollution index,and the uppe...