长江口及邻近海域表层沉积物中Cu，Zn，Pb，Cr的分布特征  

Distribution Characteristics of Cu,Zn,Pb,Cr in Surface Sediment from the Changjiang Estuary and Adjacent Waters

作　　者：秦晓光[1] 程祥圣[1] 王西蒙[2] 

机构地区：[1]国家海洋局东海环境监测中心,上海200137 [2]国家海洋局东海海洋工程勘察设计研究院,上海200090

出　　处：《海洋通报》2008年第4期75-80,共6页Marine Science Bulletin

摘　　要：2005年10月—12月,对长江口北部和江苏南部海域进行了较为全面的沉积物化学调查,调查海域范围较广、布点密度较高,为全面深入地研究该海域的底质分布状况积累了重要的资料。分析研究了其中的表层沉积物中重金属Cu,Zn,Pb,Cr含量的分布特征;讨论了重金属与有机质的相关性,并以有机质含量作为环境因素的校正因子,判别了异常值;Cu,Zn,Pb的含量相互之间也呈明显正相关,除了由于三者有相似的地球化学性质之外,可能表明它们在本调查海域有相似的污染源。以平均富集因子对重金属的富集状况进行了评价,结果表明Cu为中度污染,Zn,Pb,Cr均为轻度污染,重金属的富集程度Cu>Zn>Cr>Pb。A comprehensive survey for sediment in the north of the Changjiang estuary and the adjacent waters was carried out from October to December in 2005. The fargoing and dense survey accumulated important data for the embedded research of the distribution status of the sediments. The distribution characteristics Of Cu, Zn, Pb, Cr in surface sediment were researched in this article. The correlativity between the heavy metals and organic matter was discussed and the exceptional values were distinguished. Cu, Zn and Pb show the outstanding positive correlation in concentration and might have similar sources. The results of enrichment factor of heavy metals displayed that Cu was contaminated, and Zn, Pb, Cr were contaminated slightly, and the order of the degree of enrichment is Cu 〉 Zn 〉 Cr 〉 Pb.

关 键 词：表层沉积物 Cu Zn Pb Cr 分布 

分 类 号：P736.41[天文地球—海洋地质]