【摘要】 根据滇东南矿区河流底泥重金属数据,应用HANKANSON潜在生态危害指数法对重金属的潜在生态风险进行评价。结果表明:①该地区河流底泥中产生生态危害的主要重金属是Cd和As;②从上游到下游A~G 7个断面多重金属潜在生态风险指数(R I)从小到大排列依次为:A<D<B<F<E<G<C;③该河流重金属污染属于很强生态危害。更多还原

【Abstract】 Based on the data of heavy metals in the sediments of rivers in mining areas in the south-east of Yunnan,the potential ecological risk of heavy metals were analyzed and assessed by using the method of potential ecological risk indices presented by HANKANSON.The results show that the main heavy metals are cadmium and arsenic in the areas,and the potential ecological risk index order of heavy metals in sediments from sampling location A to G is A<D<B<F<E<G<C,and the contamination level of sediments are quite strong.更多还原