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首页> 外文期刊>Environmental Monitoring and Assessment >Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches
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Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches

机译：华南珠江口和河口沉积物芯中微量元素污染的评估：地球化学和多元分析方法

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摘要

Twenty-four major and trace elements and the mineralogical composition of four sediment cores along the Pearl River and estuary were analyzed using ICP-AES, ICP-MS, and X-ray diffraction (XRD) to evaluate contamination levels. The dominant minerals were quartz, kaolinite, and illite, followed by montmo-rillonite and feldspars, while small amounts of halite and calcite were also observed in a few samples. Cluster analysis (CA) and principal component analysis (PCA) were performed to identify the element sources. The highest metal concentrations were found at Huangpu, primarily due to wastewater treatment plant discharge and/or the surreptitious dumping of sludge, and these data differed from those of other sources. Excluding the data from Huangpu, the PCA showed that most elements could be considered as lithogenic; few elements are the combination of lithogenic and anthropogenic sources. An antagonistic relationship between the anthropogenic source metals (K, Ba, Zn, Pb, Cd, Ag, Tl,and U) and marine source metals (Na, Mg, Ti, V, and Ca) was observed. The resulting normalized Al enrichment factor (EF) indicated very high or significant pollution of Cd, Ag, Cu, Zn, Mo, and Pb at Huangpu, which may cause serious environmental effects. Conflicting results between the PCA and EF can be attributed to the background values used, indicating that background values must be selected carefully.
机译：使用ICP-AES，ICP-MS和X射线衍射（XRD）分析了珠江和河口四个沉积物芯的二十四个主要和微量元素以及矿物学组成，以评估污染水平。占主导地位的矿物是石英，高岭石和伊利石，其次是蒙脱石-长石和长石，同时在一些样品中还观察到了少量的岩盐和方解石。进行聚类分析（CA）和主成分分析（PCA）以识别元素来源。在黄浦发现最高的金属浓度，主要是由于废水处理厂的排放和/或污泥的秘密倾倒，这些数据与其他来源的数据不同。除去黄埔的数据，PCA表明大多数元素都可以认为是致岩性的。很少有元素是成岩和人为来源的组合。观察到人为源金属（K，Ba，Zn，Pb，Cd，Ag，Tl和U）与海洋源金属（Na，Mg，Ti，V和Ca）之间存在拮抗关系。最终归一化的Al富集因子（EF）表明黄埔对Cd，Ag，Cu，Zn，Mo和Pb的污染非常高或显着，这可能会造成严重的环境影响。 PCA和EF之间的冲突结果可以归因于所使用的背景值，这表明必须仔细选择背景值。

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  • 来源
    《Environmental Monitoring and Assessment》 |2014年第12期|8089-8107|共19页
  • 作者

    Yongqiang Yang; Zhuli Liu; Fanrong Chen; Shijun Wu; Ling Zhang; Mingliang Kang; Jie Li;

  • 作者单位

    Key laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    Key laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China,University of Chinese Academy of Sciences, Beijing 100049, China;

    Key laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    Key laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;

    Key laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    Key laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China,University of Chinese Academy of Sciences, Beijing 100049, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Major and trace elements; Multivariate analysis; Enrichment factor; Core sediments; Pearl River Estuary;

    机译：主要和微量元素;多变量分析;富集因子;核心沉积物;珠江口;

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