北黄海表层沉积物中重金属含量及其污染评价  

Heavy Metals in the Surface Sediments of the North Yellow Sea and Its Ecological Risk

作　　者：杜俊涛[1] 陈洪涛[1] 田琳[2] 

机构地区：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东青岛266100 [2]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2010年第S1期167-172,178,共7页Periodical of Ocean University of China

基　　金：国家908专项(908-01-ST02;908-02-02-02)资助

摘　　要：于2007年秋季对我国北黄海海域进行调查,采用原子吸收和原子荧光分光光度法对表层沉积物中的Cu,Pb,Zn,Cd,Hg,As进行了分析,并采用单因子指数法和Hakanson潜在生态危害指数法评价了该区域表层沉积物中重金属的污染程度和潜在生态危害。结果表明,北黄海表层沉积物Cu,Pb,Zn,Cd,Hg,As平均含量分别为(11.6±1.9),(25.2±2.4),(52.7±5.4),(0.22±0.02),(0.07±0.01),(13.3±1.3)μg/g;单因子指数法评价结果表明调查海域表层沉积物未受Cu,Pb,Zn,Cd,Hg污染,但部分站位As已处于中度污染水平;潜在生态危害指数法评价结果表明调查区域重金属元素的潜在危害程度顺序是Hg>Cd>As>Pb>Cu>Zn,采样区域重金属的潜在生态危害轻微。During the investigation in China's North Yellow Sea Area in the autumn of 2007,the concentrations of six heavy metals in the surface sediments were determined by AAS and AFS,and single factor method and the potential ecological risk index method were used to assess their ecological risk.The results showed that the average contents of Cu,Zn,Pb,Cd,Hg and As were(11.6±1.9),(25.2±2.4),(52.7±5.4),(0.22±0.02),(0.07±0.01),(13.3±1.3)μg/g in the North Yellow Sea.Environmental assessment with single factor method suggested that the sediments were not polluted by Cu,Zn,Pb,Cd ang Hg,while moderately contaminated with As.Ecological risk index suggested that the pollution degree of these heavy metals in the surface sediments followed the order: Hg>Cd>As>Pb>Cu>Zn,and its mild ecological risk area.

关 键 词：北黄海 沉积物 重金属 污染评价 

分 类 号：X820[环境科学与工程—环境工程]