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首页> 外文期刊>The Science of the Total Environment >Linkage between human population and trace elements in soils of the Pearl River Delta: Implications for source identification and risk assessment
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Linkage between human population and trace elements in soils of the Pearl River Delta: Implications for source identification and risk assessment

机译：人口与珠江三角洲土壤中的微量元素之间的联系：对来源识别和风险评估的启示

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摘要

The human population is both an emitter and receptor of metals. This study aims to clarify how the relationship of metals and metalloids to human populations influences their source characterization and health risk, based on metal concentrations in 298 soil samples in the Pearl River Delta (PRD) and the corresponding zip-code level population. Nickel (Ni), copper (Cu), zinc (Zn), cadmium (Cd), mercury (Hg), and lead (Pb), but not chromium (Cr) and arsenic (As), were significantly correlated with population (p < 0.01), suggesting potential anthropogenic sources. A principal component analysis (PCA) revealed three factors (i.e., F1, F2, and F3) contributing to metal levels in the PRD: (1) metal transport from rivers (F1), which explained the high levels of Cr, Ni, Cu, Zn, As, and Cd in downstream areas; (2) industrial sources (F2), mainly contributing to Ni, Cu, Zn, Cd, Hg, and Pb; and (3) natural and agricultural sources (F3), mainly contributing to As and Pb. F2 was significantly correlated with population, while F3 was not, indicating that an analysis of the correlation with population could be used to identify industrial sources of metals. Compared with directly calculated risks, the population-weighted non-carcinogenic and carcinogenic risks were increased by 4.2-4.9% and 7.7-9.2%, respectively. A unit increase in the concentration of industrial metals led to higher extra risks than a corresponding increase in natural metals due to the proximity to human populations.
机译：人口既是金属的发射者又是金属的接受者。这项研究旨在根据珠江三角洲（PRD）的298个土壤样品中的金属浓度以及相应的邮政编码级别人口，阐明金属和准金属与人口之间的关系如何影响其来源特征和健康风险。镍（Ni），铜（Cu），锌（Zn），镉（Cd），汞（Hg）和铅（Pb），而不与铬（Cr）和砷（As）显着相关（p <0.01），表明潜在的人为来源。主成分分析（PCA）显示了影响珠三角金属含量的三个因素（即F1，F2和F3）：（1）河流中的金属迁移（F1），这说明了Cr，Ni，Cu的含量很高，锌，砷和镉在下游地区； （2）工业来源（F2），主要来源为镍，铜，锌，镉，汞和铅。 （3）天然和农业来源（F3），主要来自砷和铅。 F2与人口显着相关，而F3与人口没有显着相关，这表明与人口相关性的分析可用于识别金属的工业来源。与直接计算的风险相比，按人群加权的非致癌和致癌风险分别增加了4.2-4.9％和7.7-9.2％。由于接近人口，工业金属浓度的单位增加导致比天然金属相应增加的更高的额外风险。

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  • 来源
    《The Science of the Total Environment》 |2018年第1期|944-950|共7页
  • 作者

    Yan Lin; Jin Ma; Zhengdong Zhang; Yifang Zhu; Hong Hou; Long Zhao; Zaijin Sun; Wenjuan Xue; Huading Shi;

  • 作者单位

    Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, CA 90095, United States;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;

    School of Geography, South China Normal University, Guangzhou 510631, China;

    Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, CA 90095, United States;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Human population; Metal and metalloid; Soil; Source identification; Risk assessment;

    机译：人口;金属和准金属;泥;来源识别;风险评估;

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