Research on heavy metals in sediments of Panlong river in Kunming

The concentrations of five heavy metals involving Zinc(Zn),Copper(Cu),Cadmium(Cd),Lead(Pb) and Chrome(Cr) in sediments of Panlong river were determined and their influences on the water quality and the around environment were evaluated by the ecological risk index of Hakason.The results showed that heavy metal,especially Zn-,Cu-,and Cd-contamination in sediments of Panlong river was serious.The pollution degree varied along Panlong river,and relatively Youguan bridge,Yuantong bridge,Nantai bridge and Shuanglong bridge were heavily polluted.In most reaches of river the potential adverse effects of heavy metal were light or moderate,but the ecological risk index of Hakason of Cd was high in this river and around environments.