黄茅海及口外海滨表层沉积物重金属污染及其生态风险评价  

Assessment on the Pollution Level and Potential Ecological Risk of Heavy Metals in Surface Sediments of Huangmao Sea and its Offshore Area

作　　者：邢玉清[1] 陆茸[1] 郑红波[2] 

机构地区：[1]国家海洋局南海工程勘察中心,广东广州510300 [2]中国科学院边缘海地质重点实验室,中国科学院南海海洋研究所,广东广州510301

出　　处：《海洋技术》2013年第4期85-88,共4页Ocean Technology

基　　金：国家自然科学基金资助项目(41106056);国家海洋局南海分局海洋科学技术局长基金资助项目

摘　　要：采用污染指数法和生态风险指数法对黄茅海及口外海滨海域表层沉积物中Hg,Cu,Pb,Zn,Cd,As,Cr等污染要素进行分析和评价。结果表明:该海域的总体污染程度为低污染水平,其污染程度由大到小依次为As>Zn>Hg>Cu>Pb>Cd>Cr;该海域的总体生态风险性为低,生态风险性由高到低依次为Hg>As>Cd>Cu>Pb>Zn>Cr,Hg为该海域的主要潜在生态风险因子。The pollution index method and Hakanson potential ecological risk index method were used to study and analyze the pollution factors （Hg, Cu, Pb, Zn, Cd, As, Cr） in surface sediments of Huangrnao Sea and its offshore area. The results show that the overall contamination level and potential eeologieal risk of typical pollutants are at the low level in this sea area. The sequence of the pollution degree of heavy metals in surface sediments is As〉Zn〉Hg〉Cu〉Pb〉Cd〉Cr; and the potential ecological risk sequence is Hg〉 As〉Cd〉Cu〉Pb〉Zn〉Cr. Hg is the major factor of potential ecological risk in surface sediments of this sea area.

关 键 词：黄茅海 口外海滨 沉积物 重金属污染 生态风险评价 

分 类 号：X55[环境科学与工程—环境工程]