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Source apportionment and health risk assessment of heavy metals in soil for a township in Jiangsu Province, China

机译：中国江苏省某乡镇土壤中重金属的来源分配和健康风险评估

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摘要

Human activities contribute greatly to heavy metal pollution in soils. Concentrations of 15 metal elements were detected in 105 soil samples collected from a typical rural-industrial town in southern Jiangsu, China. Among them, 7 heavy metals lead, copper, zinc, arsenic, chromium, cadmium, and nickel were considered in the health risk assessment for residents via soil inhalation, dermal contact, and/or direct/indirect ingestion. Their potential sources were quantitatively apportioned by positive matrix factorization using the data set of all metal elements, in combination with geostatistical analysis, land use investigation, and industrial composition analysis. Furthermore, the health risks imposed by sources of heavy metal in soil were estimated for the first time. The results indicated that Cr, Cu, Cd, Pb, Ni, and Co accumulated in the soil, attaining a mild pollution level. The total hazard index values were 3.62 and 6.11, and the total cancer risks were 9.78 x 10(-4) and 4.03 x 10(-4) for adults and children, respectively. That is, both non-carcinogenic and carcinogenic risks posed by soil metals were above acceptable levels. Cr and As require special attention because the health risks of Cr and As individually exceeded the acceptable levels. The ingestion of homegrown produce was predominantly responsible for the high risks. The potential sources were apportioned as: a) waste incineration and textile/dyeing industries (28.3%), b) natural sources (45.4%), c) traffic emissions (5.3%), and d) electroplating industries and livestock/poultry breeding (21.0%). Health risks of four sources accounted for 23.5%, 32.7%, 7.4%, and 36.4% of the total risk, respectively. (C) 2016 Published by Elsevier Ltd.
机译：人类活动对土壤中的重金属污染做出了巨大贡献。从中国苏南地区一个典型的农村工业城镇收集的105个土壤样品中检测到15种金属元素的浓度。其中，通过土壤吸入，皮肤接触和/或直接/间接摄食，在居民健康风险评估中考虑了7种重金属铅，铜，锌，砷，铬，镉和镍。利用所有金属元素的数据集，结合地统计分析，土地利用调查和工业成分分析，通过正矩阵分解对它们的潜在来源进行了定量分配。此外，首次估算了土壤中重金属来源带来的健康风险。结果表明，Cr，Cu，Cd，Pb，Ni和Co积累在土壤中，污染程度中等。成人和儿童的总危险指数分别为3.62和6.11，总癌症风险分别为9.78 x 10（-4）和4.03 x 10（-4）。也就是说，土壤金属造成的非致癌和致癌风险均高于可接受水平。 Cr和As需要特别注意，因为Cr和As的健康风险单独超过了可接受的水平。摄入自产农产品是造成高风险的主要原因。潜在来源按以下比例分摊：a）废物焚化和纺织/染色工业（28.3％），b）自然资源（45.4％），c）交通尾气排放（5.3％），以及d）电镀工业和畜禽养殖业（ 21.0％）。四种来源的健康风险分别占总风险的23.5％，32.7％，7.4％和36.4％。 （C）2016由Elsevier Ltd.出版

著录项

  • 来源
    《Chemosphere》 |2017年第2期|1658-1668|共11页
  • 作者

    Jiang Yanxue; Chao Sihong; Liu Jianwei; Yang Yue; Chen Yanjiao; Zhang Aichen; Cao Hongbin;

  • 作者单位

    Beijing Normal Univ, Beijing Area Major Lab Protect & Utilizat Tradit, Beijing, Peoples R China|Beijing Normal Univ, Coll Resource Sci & Technol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China;

    Beijing Normal Univ, Beijing Area Major Lab Protect & Utilizat Tradit, Beijing, Peoples R China|Beijing Normal Univ, Coll Resource Sci & Technol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China;

    Beijing Normal Univ, Beijing Area Major Lab Protect & Utilizat Tradit, Beijing, Peoples R China|Beijing Normal Univ, Coll Resource Sci & Technol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China;

    Beijing Normal Univ, Beijing Area Major Lab Protect & Utilizat Tradit, Beijing, Peoples R China|Beijing Normal Univ, Coll Resource Sci & Technol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China;

    Beijing Normal Univ, Beijing Area Major Lab Protect & Utilizat Tradit, Beijing, Peoples R China|Beijing Normal Univ, Coll Resource Sci & Technol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China;

    Beijing Normal Univ, Beijing Area Major Lab Protect & Utilizat Tradit, Beijing, Peoples R China|Beijing Normal Univ, Coll Resource Sci & Technol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China;

    Beijing Normal Univ, Beijing Area Major Lab Protect & Utilizat Tradit, Beijing, Peoples R China|Beijing Normal Univ, Coll Resource Sci & Technol, 19 Xinjiekouwai St, Beijing 100875, Peoples R 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

    Soil heavy metals; Health risks; Source apportionment; Positive matrix factorization;

    机译：土壤重金属;健康风险;源分配;正矩阵分解;

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