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首页> 外文期刊>Water, Air, and Soil Pollution >Influence of Sediment Grain Size and Land Use on the Distributions of Heavy Metals in Sediments of the Han River Basin in Korea and the Assessment of Anthropogenic Pollution
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Influence of Sediment Grain Size and Land Use on the Distributions of Heavy Metals in Sediments of the Han River Basin in Korea and the Assessment of Anthropogenic Pollution

机译：沉积物粒度和土地利用对韩国汉江流域沉积物中重金属分布的影响及人为污染评估

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摘要

The influence of sediment grain size and land use was examined on the distribution of Cr, Ni, Zn, Pb, Cd, Cu, As, and Hg in the sediments collected from 19 subbasins of the Han River Basin, Korea. The degree of anthropogenic pollution of the heavy metals was also evaluated using the enrichment factor and geoaccumulation index based on local geochemical background concentrations. Except for Zn and Al, all the metals investigated showed significant correlations with the fine silt fraction of the sediments, suggesting that grain size distribution may contribute to the enrichment of the metals. Close association of the metal concentrations with a percentage of urban area in the subbasin was exhibited only for Cd, Cu, Hg, and Pb. The two pollution indices revealed that most of the sediments could be classified into a category of "unpolluted to moderately polluted," except for a subbasin with the highest percentage of urban area, which was highly polluted with Cu, Hg, and Pb. No relationship was observed between agricultural land use and the enrichment of metals. Principal component analysis showed that a combination of grain size distribution and percent urban area were responsible for 55 % of the variance of the metal distribution. Cluster analysis revealed that the sources of As might be different from the other metals. Multiple regression analyses based on fine silt fraction and percent urban area resulted in a good estimation of the concentrations of Cd, Cu, Hg, and Pb (r>0.7, p<0.005).
机译：研究了沉积物粒度和土地利用对韩国汉江流域19个流域收集的沉积物中Cr，Ni，Zn，Pb，Cd，Cu，As和Hg分布的影响。还根据当地地球化学背景浓度，使用富集因子和地积累指数评估了重金属的人为污染程度。除锌和铝外，所有研究的金属均与沉积物的细粉质含量显着相关，这表明粒度分布可能有助于金属的富集。仅Cd，Cu，Hg和Pb表现出金属浓度与子盆地中城市地区的百分比密切相关。这两个污染指数表明，大多数沉积物可归为“未污染至中度污染”类别，除了城市面积百分比最高的亚流域（其中Cu，Hg和Pb高度污染）。在农业土地利用与金属富集之间未发现任何关系。主成分分析表明，晶粒度分布和城市面积百分比的组合构成了金属分布变化的55％。聚类分析表明，砷的来源可能与其他金属不同。基于细粉土含量和城市面积百分比的多元回归分析可以很好地估算Cd，Cu，Hg和Pb的浓度（r> 0.7，p <0.005）。

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  • 来源
    《Water, Air, and Soil Pollution》 |2013年第7期|159-170|共12页
  • 作者

    Tien M. Lai; Wonkyo Lee; Jin Hur; Younghun Kim; In-Ae Huh; Hyun-Sang Shin; Chan-Kook Kim; Jong-Hyun Lee;

  • 作者单位

    Department of Environment and Energy,Sejong University, Seoul 143-747, South Korea;

    Department of Environment and Energy,Sejong University, Seoul 143-747, South Korea;

    Department of Environment and Energy,Sejong University, Seoul 143-747, South Korea;

    Department of Environmental Engineering,Andong National University, Andong 760-749, South Korea;

    National Institute of Environmental Research,Incheon 404-708, South Korea;

    Department of Environmental Engineering,Seoul National University of Science and Technology,Seoul 139-743, South Korea;

    NEO Environmental Business Corporation,Bucheon 420-806, South Korea;

    NEO Environmental Business Corporation,Bucheon 420-806, South Korea;

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

    River sediments; Metal pollution; Geochemical background; Enrichment factor; Land use; Multivariate statistical analyses;

    机译：河流沉积物;金属污染;地球化学背景;富集因子;土地利用;多元统计分析;

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