引用本文:吴建兰,沈红军.南通市濠河沉积物重金属污染特征及生态环境风险评价[J].环境监控与预警,2012,4(4):42-50
.Assessment on Heavy Metal Pollution and its Potential Ecological Risk in the Sediment on Nantong Hao River[J].Environmental Monitoring and Forewarning,2012,4(4):42-50
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南通市濠河沉积物重金属污染特征及生态环境风险评价
吴建兰,沈红军1,2
1.南通市环境监测中心站,江苏 南通 226001;2.江苏省环境监测中心,江苏 南京 210036
摘要:
对濠河沉积物重金属污染的总体水平进行调查,采用地累积指数法、内梅罗综合污染指数法和潜在生态危害指数法评价南通市濠河沉积物重金属污染现状及潜在生态环境风险,分析2001-2011年濠河沉积物重金属污染变化趋势。结果表明,濠河重金属污染程度属于中污染水平,重金属潜在生态危害属较强级别,毒性系数较大的总镉潜在生态危害排在首位,总镉应作为今后濠河水环境综合整治的重点防控指标。
关键词:  濠河  沉积物;重金属;地累积指数法;生态危害系数;内梅罗综合污染指数;变化趋势
DOI:
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基金项目:江苏省环境监测科研基金项目(1109)
Assessment on Heavy Metal Pollution and its Potential Ecological Risk in the Sediment on Nantong Hao River
Abstract:
The heavy metal contents in the sediment were investigated on Nantong Hao River. The pollution of heavy metal was evaluated with the potential ecological risk index method, the geo-accumulation Index method and the comprehensive pollution index method. The tendency of the heavy metal contents during 2001-2011 was analyzed. The results demonstrated that the pollution had reached a medium degree and the ecological risk had reached a high degree. Cd, which had a high toxicity coefficient, had a higher potential ecological risk than the other heavy metal. More emphasis should be placed on Cd control in the next step.
Key words:  Hao River  Sediment  Heavy metal  Geo-accumulation Index method  Potential ecological risk  the Comprehensive pollution  tendency