盐城新洋港表层沉积物重金属分布特征与评价  

Distribution Characteristics and Assessment of Heavy Metals in Surface Sediments along Xinyanggang Estuary in Yancheng

作　　者：王俊杰[1,2] 左平[1,2] 黄阳[1] 黄雪[1] 杜进进 

机构地区：[1]南京大学地理与海洋科学学院,江苏南京210093 [2]南京大学海岸与海岛开发教育部重点实验室,江苏南京210093 [3]江苏盐城国家级自然保护区,江苏盐城224333

出　　处：《环境保护科学》2013年第5期57-62,共6页Environmental Protection Science

基　　金：国家海洋局公益项目(201005006-01);国家基础科学人才培养基金(J0630535);国家自然科学基金(40606025)

摘　　要：分析了江苏盐城新洋港河口表层沉积物中的Cr、Ni、Cu、Zn、Cd、Pb共6种重金属元素的含量。研究发现,除Zn和Cd外,其它元素的含量均超过江苏省海岸带的背景值,其中全Cr、Pb、Cu的含量均超国家I类标准,属Ⅰ类沉积物。文章分别使用内梅罗综合污染指数法、Hakanson潜在生态危害指数法和污染负荷指数法对数据进行了分析,研究结果发现内梅罗综合污染指数法得出Cr对环境污染的贡献最大;Hakanson潜在生态危害指数法认为潜在生态风险整体呈现向海不断减小的趋势,并以有植被覆盖的互花米草滩为最高。污染负荷指数法与Hakanson潜在生态危害指数法的评价结果一致。从线状分布看,6种重金属的综合含量整体呈沿向海方向减小趋势,互花米草滩明显高于无植被覆盖的光滩。The paper analyzed the concentrations of heavy metals in the surface sediments of Xinyanggang Estuary,Yancheng,Jiangsu province,including Cr,Ni,Cu,Zu,Cd,Pb.Results showed that the measured heavy metals＇ concentrations,except Zn and Cd,all exceeded the background values of the coastal zone in Jiangsu Province,and Cr,Pb,Cu belonged to I class sediments according to National Standard.Nemerow Integrated Pollution Index （NIPI）,Hakanson Potential Ecological Risk Index （HPERI） and Pollution Load Index （PLI） were used to analyze the pollution status in this area.Cr contributed much to the pollution status based on NIPI method.Spartina marsh was mostly polluted than other areas and the muddy flats was less polluted according to HPERI method,which was consistent with the result of PLI method.Based on linear distribution,concentration of heavy metals showed decreasing trend to the sea,and Spartina marsh was mostly polluted than other areas without plants.

关 键 词：新洋港河 表层沉积物 重金属 分布特征 江苏盐城 污染评价 

分 类 号：P736.211[天文地球—海洋地质]