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首页> 外文期刊>Environmental Geology >Accumulation and sources of heavy metals in urban topsoils: a case study from the city of Xuzhou, China
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Accumulation and sources of heavy metals in urban topsoils: a case study from the city of Xuzhou, China

机译：城市表层土壤中重金属的积累与来源-以徐州市为例

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摘要

The knowledge of the variability, the anthropogenic versus natural origin and corresponding environmental risk for potentially harmful elements in urban topsoils is of importance to assess human impact. The aims of the present study were: (1) to assess the distribution of heavy metals (Sn, Li, Ga, Ba, Fe, Mn, Co, Be, Ti, Al, Hg, Cr, Sb, As, Bi, Pd, Pt, Au, Ni, Cd, Zn, Cu, Pb, Se, Mo, Sc and Ag) in urban environment; (2) to discriminate natural and anthropogenic contributions; and (3) to identify possible sources of pollution. Multivariate statistic approaches (principal component analysis and cluster analysis) were adopted for data treatment, allowing the identification of three main factors controlling the heavy metal variability in Xuzhou urban topsoils. Results demonstrate that Hg, Cr, Sb, As, Bi, Pd, Pt, Au, Ni, Cd, Br, Zn, Cu, S, Pb, Se, Mo, Sc and Ag could be inferred to be tracers of anthropogenic pollution, whereas Al, Ti, Ga, Li, V, Co, Pt, Mn and Be were interpreted to be mainly inherited from parent materials. Iron, Ba, Sn, Pd and Br were interpreted to be affected by mixed sources.
机译：了解变异性，人为与自然起源的关系以及城市表土中潜在有害元素的相应环境风险对于评估人类影响至关重要。本研究的目的是：（1）评估重金属（Sn，Li，Ga，Ba，Fe，Mn，Co，Be，Ti，Al，Hg，Cr，Sb，As，Bi，Pd ，Pt，Au，Ni，Cd，Zn，Cu，Pb，Se，Mo，Sc和Ag）; （2）区分自然和人为贡献； （3）确定可能的污染源。采用多元统计方法（主成分分析和聚类分析）进行数据处理，从而可以确定控制徐州城市表层土壤重金属变异性的三个主要因素。结果表明，Hg，Cr，Sb，As，Bi，Pd，Pt，Au，Ni，Cd，Br，Zn，Cu，S，Pb，Se，Mo，Sc和Ag可以推断为人为污染的示踪剂，而Al，Ti，Ga，Li，V，Co，Pt，Mn和Be被认为主要继承自母体材料。铁，钡，锡，钯和溴被认为受混合源的影响。

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