摘要
根据1984年湄洲湾表层沉积物中重金属的分析资料,讨论了它们的地球化学特征和主要来源。沉积物中重金属的含量(Fe、Mn、Cu、Ni 的质量分数均值分别为3.21%、730×10^(-6)、19.4×10^(-6)、44×10^(-6)分布比较均匀,Pb、Zn 和Co 含量(质量分数均值分别为47.0×10^(-6)、25.8×10^(-6)和243×10^(-6))偏高,微量金属含量不受Fe-Mn 氧化物和有机物控制,本地区的金属来源受陆源输入的影响明显。
The contents of Fe,Mn,Cu,Pb,Zn,Co and Ni in the surface sediments and acid-soluble frac-tion collected in the Meizhou Bay,Fujian in 1984 were determined,their distributions and relationshipare discussed in this paper.It has been found that the heavy metal contents in the sediments are Fe:2.75%～4.02%,mean 3.21%;Mn:(599～1 099)×10^(-6),mean 730×10^(-6);Cu:(14.2～22.2)×10^(-6),mean 19.4×10^(-6);Pb.(40.6～54.1)×10^(-6),mean 47.0×10^(-6);Zn:(103～404)×10^(-6),mean 243×10^(-6);Co:(18.7～30.9)×10^(-6),mean 25.8×10^(-6);Ni:(33.4～53.4)×10^(-6),mean44.0×10^(-6) respectively.The contents of Pb,Zn(and Co)in the sediments are higher than those ofnormal sediments and the contents of trace metals not controlled either by Fe-Mn oxide or organic mat-ter,indicationg the regional geochemical characteristics which may be affected by the small metalmines along the Fujian coast.About 50% of Mn and Pb exist in the acid-soluble fraction and other metals mostly in acid-insol-uble fraction.There may be a stable stribution between various forms of metals in the sediments.
出处
《台湾海峡》
CAS
CSCD
1993年第1期16-20,共5页
Journal of Oceanography In Taiwan Strait
关键词
重金属
表层
沉积物
地球化学
Heavy metal
surface sediment
geochemistry
Fujian
