渤海表层沉积物重金属污染评价  

An evaluation on heavy metal contamination in the surface sed-iments in Bohai Sea

作　　者：陈江麟[1] 刘文新[2] 刘书臻[2] 林秀梅[2] 陶澍[2] 

机构地区：[1]国家海洋局北海分局,山东青岛266033 [2]北京大学环境学院地表过程分析与模拟实验室,北京100871

出　　处：《海洋科学》2004年第12期16-21,共6页Marine Sciences

基　　金：国家自然科学基金项目(40021101)

摘　　要：依据第二次全国海洋污染基线调查数据,采用地积累指数和潜在生态风险因子两种方法对渤海表层沉积物中As,Cd,Hg,Pb进行污染分区评价。结果表明,渤海全区内Cd,Hg和Pb存在较强的正相关关系。各海区重金属污染特征明显不同(1)北部辽东湾Hg和Cd污染最为严重;(2)秦皇岛近岸Hg污染较为突出;(3)南部莱州湾仅有轻微Hg污染,而西部渤海湾没有出现上述金属污染;(4)辽东半岛近岸和外海海区呈现偏中度Hg污染。In this study,geoaccumulation index and potential ecological risk factor were employed to evaluate the contamination of As,Cd,Hg and Pb at different sites in Bohai Sea,using the data on the Second Survey of Marine Pollution Baseline.The results indicated that Cd and Pb had significant positive correlation with Hg in the surface sediments in Bohai Sea.In addition,the studied heavy metals showed different characteristics in different areas:(1)there was a severe conˉtamination of Cd and Hg in northern Liaodong Bay;(2)intermediate contamination of Hg occurred at the coastal area of Qinhuangdao;(3)only slight Hg contamination was found in the southern Laizhou Bay,and no studied metal contamination was found in western Bohai Bay;and(4)intermediate Hg contamination was presented in the area adjacent to Liaodong Peninsula and in outer sea area.

关 键 词：渤海 表层沉积物 重金属 地积累指数 潜在生态风险因子 

分 类 号：X832[环境科学与工程—环境工程]