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铜矿弃渣场下游农田土壤重金属污染特征及健康风险评价

程睿

程睿. 铜矿弃渣场下游农田土壤重金属污染特征及健康风险评价[J]. 环境工程技术学报, 2020, 10(2): 280-287. doi: 10.12153/j.issn.1674-991X.20190095
引用本文: 程睿. 铜矿弃渣场下游农田土壤重金属污染特征及健康风险评价[J]. 环境工程技术学报, 2020, 10(2): 280-287. doi: 10.12153/j.issn.1674-991X.20190095
CHENG Rui. Pollution characteristics and health risk assessment of heavy metals in farmland soil downstream of a copper mine slag dumps[J]. Journal of Environmental Engineering Technology, 2020, 10(2): 280-287. doi: 10.12153/j.issn.1674-991X.20190095
Citation: CHENG Rui. Pollution characteristics and health risk assessment of heavy metals in farmland soil downstream of a copper mine slag dumps[J]. Journal of Environmental Engineering Technology, 2020, 10(2): 280-287. doi: 10.12153/j.issn.1674-991X.20190095

铜矿弃渣场下游农田土壤重金属污染特征及健康风险评价

doi: 10.12153/j.issn.1674-991X.20190095
详细信息
    作者简介:

    程睿(1984—),男,高级工程师,硕士,主要从事环境治理与生态修复技术研究,chengrui99888@163.com

  • 中图分类号: X53

Pollution characteristics and health risk assessment of heavy metals in farmland soil downstream of a copper mine slag dumps

  • 摘要: 以江西省某铜矿弃渣场拦渣坝下游农田土壤为研究对象,对3个地块(1 #、2 #和3 #)土壤中重金属Cu、Pb、Cd、As和Sb污染现状进行分析和评价。结果表明:3个地块土壤中各重金属平均浓度均高于江西省土壤背景值,其中1 #地块Cu、Cd和3 #地块Cu、Sb、As的平均浓度均超过GB 15618—2018《土壤环境质量 农用地土壤污染风险管控标准(试行)》水田风险筛选值(pH<6.5);1 #、2 #、3 #地块的尼梅罗综合指数(P)分别为11.30、1.25、2.95,分属重度、轻度和中度污染水平;地累积指数法评价结果表明,1 #和3 #地块土壤均受到不同程度的Cu、Cd、Sb、Pb、As污染,2 #地块土壤受到不同程度的Cu、Pb、Sb、As污染;健康风险分析表明,3个地块土壤对成人和儿童均无非致癌风险,对儿童的致癌风险均超过美国国家环境保护局规定的最大可接受限值(1.0×10 -4),其中1 #和3 #地块土壤对成人的致癌风险也超过最大可接受限值,存在不可接受的致癌风险,3种致癌重金属的致癌风险(CR)表现为As>Cd>Pb,且3种暴露途径对致癌风险的贡献为口腔>皮肤>呼吸。

     

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  • 收稿日期:  2019-06-03
  • 刊出日期:  2020-03-20

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