南通市七条主要内河底泥重金属污染风险评价  

Heavy Metal Pollution and it's Assessment in the sediment on Seven Rivers in Nantong

作　　者：吴建兰 

机构地区：[1]南通市环境监测中心站,江苏226001

出　　处：《环境与发展》2013年第1期42-46,共5页Environment & Development

基　　金：江苏省环境监测科研基金项目(1109)课题论文

摘　　要：采用地累积指数法、内梅罗综合指数法和潜在生态危害指数法评价南通市七条主要内河底泥重金属污染现状及环境风险,重金属污染状况及环境风险由重到轻排序均为:濠河>九圩港河>通扬运河>通吕运河>任港河>海港引河>通启运河,濠河、九圩港河、通扬运河属中污染Ⅲ级,任港河、通吕运河、海港引河、通启运河属轻污染Ⅳ级。内河底泥中毒性系数较大的总镉潜在生态危害排在首位,总镉应作为今后南通市内河水环境综合整治的重点防控指标。Evaluated the heavy metal pollution in the sediment on seven rivers in Nantong with the potential ecological risk index method, the geo - accumulation Index method and the Comprehensive pollution index method. The results shown that the pollution and the potential ecological risk of Heavy Metals followed order of the Hao River 〉 the Juweigang River 〉 the Tongrang River 〉 the Tongliu River 〉 the Rengang River 〉 the Haigang River 〉 the Tongqi river . It demonstrated that the pollution of the Hao River , the Juweigang River and the Tongrang River had reached a middle degree , the other rivers had reached a low degree. Cd of higher toxicity coefficient listed on top of potential ecological risks. More emphasis should be placed on Cd control in the next step.

关 键 词：底泥 重金属 地累积指数法 生态危害系数 内梅罗综合指数 

分 类 号：X820.4[环境科学与工程—环境工程]