台湾海峡西部海域沉积物中重金属的地球化学特征  

Geochemical charactoristics of heavy metals in West Taiwan Strait sediments

作　　者：陈松[1] 许爱玉[1] 骆炳坤[1] 廖文卓[1] 

机构地区：[1]国家海洋局第三海洋研究所,厦门361005

出　　处：《台湾海峡》1993年第3期280-286,共7页Journal of Oceanography In Taiwan Strait

摘　　要：台湾海峡西部海域表层沉积物中重金属含量与未污染近岸沉积物的平均含量相当,基本上未受污染。各重金属含量具有沿东北至西南方向递减的分布趋势。沉积物中微量金属的含量明显地受Fe-Mn 氧化物和有机质的含量所控制。福建沿海主要港湾沉积物中Pb、Zn 含量偏高,微量金属含量不受Fe-Mn 氧化物和有机质控制,构成本地区沉积物的两种区域性特征。The contents of Fe,Mn,Cu,Pb,Zn,Co and Ni in surface sediments and their acid-soluble frac-tion are presented for West Taiwan Strait and harbours along the coast of Fujian Province.Their dis-tribution and interrelation are discussed in this paper.It has been found that the contents of heavy met-als in surface sediments from West Taiwan Strait are close to the mean value of unpolluted neritie sedi-ments,and essentially no pollution is found.The heavy metals decrease along the direction from thenortheast to the southwest,a result of increase of particle size of the sediments.The heavy metals insediment are evidently governed by Fe-Mn oxides and organic matters.The dinstictly higher Pb and Zn(as well as Co)and that the trace metals are not goverened by Fe-Mn oxides and organic matters,making up the two regional characters of sediments from harbours a-long Fujian Coast,It has been suggested that the small-sized metallic minerals spread along FujianCoast may be the major sources,which do not affect the Strait area.In sediments both from the West Taiwan Strait and harbours along Fujian Coast,about 50% ofPb and Mn are in acid-soluble fraction,and the other are principally in residual phase.A relativelyconstant distribution pattern exists in different forms of metals,which closely correlate to the chemicalcharacters of metals.

关 键 词：重金属 地球化学 沉积物 海洋 

分 类 号：P736.41[天文地球—海洋地质]