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福州市公交枢纽站地表灰尘重金属含量、来源及其健康风险评价

李小飞 陈志彪 张永贺 陈志强

李小飞, 陈志彪, 张永贺, 陈志强. 福州市公交枢纽站地表灰尘重金属含量、来源及其健康风险评价[J]. 环境科学研究, 2013, 26(8): 906-912.
引用本文: 李小飞, 陈志彪, 张永贺, 陈志强. 福州市公交枢纽站地表灰尘重金属含量、来源及其健康风险评价[J]. 环境科学研究, 2013, 26(8): 906-912.
LI Xiao-fei, CHEN Zhi-biao, ZHANG Yong-he, CHEN Zhi-qiang. Concentrations, Sources and Health Risk Assessments of Heavy Metals in Ground Surface Dust from Urban Bus Terminals of Fuzhou City[J]. Research of Environmental Sciences, 2013, 26(8): 906-912.
Citation: LI Xiao-fei, CHEN Zhi-biao, ZHANG Yong-he, CHEN Zhi-qiang. Concentrations, Sources and Health Risk Assessments of Heavy Metals in Ground Surface Dust from Urban Bus Terminals of Fuzhou City[J]. Research of Environmental Sciences, 2013, 26(8): 906-912.

福州市公交枢纽站地表灰尘重金属含量、来源及其健康风险评价

基金项目: 国家自然科学基金项目(41171232,41001170)

Concentrations, Sources and Health Risk Assessments of Heavy Metals in Ground Surface Dust from Urban Bus Terminals of Fuzhou City

  • 摘要: 城市地表灰尘中的重金属已成为城市环境和人类健康最重要的威胁之一. 为评价地表灰尘重金属的污染水平,研究了福州市公交枢纽站地表灰尘中的重金属质量分数、来源及其可能产生的健康风险. 结果表明:福州市公交枢纽站地表灰尘中w(Cr)、w(Cu)、w(Zn)和w(Cd)分别是福州市城区土壤的2.74、4.21、4.01和4.68倍. 灰尘中重金属Co、Ni和Mn主要来源于城市土壤,Cd、Pb和Cu来源于交通运输过程,Cr来源于城市土壤和交通运输,Zn主要来源于交通运输、城市生活污染和工业活动等复合污染源. 不同暴露途径的重金属暴露剂量和非致癌风险大小排序为消化道>皮肤接触>呼吸吸入. 地表灰尘中重金属非致癌总风险为儿童高于成人. 致癌重金属的暴露风险为Cd>Ni>Cr. 城市公交枢纽站地表灰尘中重金属污染受交通运输影响较大.

     

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出版历程
  • 收稿日期:  2013-01-29
  • 修回日期:  2013-06-07
  • 刊出日期:  2013-08-25

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