厦门海域现代沉积环境与重金属环境地球化学特征

Environmental Geochemistry Characteristics of Heavy Metals and Depositional Environment in Xiamen Seas

通过厦门海域表层沉积物重金属含量分析、粒度分析及对测试结果进行的聚类分析,我们对厦门海域现代沉积环境和重金属环境地球化学特征进行了探讨。结果表明,研究海域各海区间,同一海区不同站位间沉积环境存在较大差异。重金属在各站位含量主要取决于其相应的富集组分多少,仅在个别站位受具体元素的物源影响较大。研究发现,Zn、Cu、Pb、As、Cr在细砾和粗砂中的含量可以反映其在该地区的环境背景值大小。

Environmental geochemistry characteristics of heavy metals and depositional environment of Xiamen seas were investigated by means of content of heavy metals analysis, size analysis of surface sediments and by means of cluster analysis to the testing results. The results show that the big difference of depositional environment exists among the sea areas, different site of the same sea area. Content of heavy metals depends on the key enrichment components in each site, there were a rather large influence by provenance of separate element on separate site. It was found that the content of Zn, Cu, Pb, As, Cr in fine gravel and coarse sand may indicate their original value in the territory.