摘要:
对双台子河口潮滩上所采集沉积物样品的微量元素含量进行了测试分析,研究其空间分布特征、元素相关性以及元素组合特征,探索了微量元素在河口潮滩上的迁移富集规律及其控制因素。结果表明:潮滩沉积物中Cu、Pb、Zn元素富集,V元素流失;除Ti、Ba、Sr、Zr外,其余11种元素均表现为高潮滩比中低潮滩含量高;R型因子分析识别出3个微量元素组合,分别是Mn、Rb、Co、Cu等为代表的亲铁亲铜的元素组合,Sr、Ba等与含钾矿物有关的元素组合和Nb、Y等与细粒黏土有关的元素组合。
Abstract:
Sediments were sampled on the muddy tidal flat at the estuary of the Shuangtaizi River, and studied were the distribution pattern of trace elements, element assemblages and correlation of individual elements in order to seek for the mechanisms of transportation and enrichment of the trace elements and their dominating factors. The results show that all the factors, such as fresh water input, seawater properties and human activities are all effective on the spatial distribution of trace elements. Cu, Pb and Zn are rich in muddy deposits, but V is relatively poor. Apart from Ti, Ba, Sr, Zr, concentrations of other 11 kind of elements are higher in the high muddy tidal flat but lower in the middle and low tidal flats. Three assemblages of trace elements were identified by R-factor analysis, including the assemblage of siderophile and chalcophile elements represented by Mn, Rb, Co, Cu, the assemblage of potasium minerals related elements represented by Sr, Ba; and assemblage of clay related elements represented by Nb and Y.
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