期刊论文

Nie, C.-M.

中文

中国环境科学

1000-6923

2011

31

6

944-950

国家自然科学基金资助项目（10505023）； 中国科学院知识创新工程重要方向性项目（KJCX3.SYW.N3）；

本校为第一且通讯机构

采集了北京地铁16个站点灰尘的样本,测定了灰尘中7种重金属Cr、Cd、Cu、Ni、Hg、Pb、As的浓度,并采用地累积指数法、美国EPA风险评价模型和Spearman相关系数分析,对重金属污染程度、人体健康风险及来源进行分析.结果表明,Cr、Cd、Cu、Ni、Hg、Pb、As的含量分别为131.92,1.11,67.33,41.77,0.35,437.41,9.09mg/kg,均超过北京土壤背景值.地累积指数呈现Pb>Hg>Cd>Cr>Cu>Ni>As,其中Pb、Hg、Cd分别为3.77,3.12,2.16,达到严重污染.人体健康风险评价表明,存在的非致癌风险依次为Pb>Cr>As>Ni>Cu>Hg>Cd,除Pb外,均不构成明显的风险.Cr、Cd、Ni、As致癌风险均低于风险阈...

The aims of this study were to examine the concentrations of heavy metal in areas within the Beijing metropolitan subway network A total of 16 subway stations were selected. The contents of 7 trace heavy metals such as Pb, Cr, Cu, Zn, Ni, As and Hg were determined. Their pollution degree, health risk and source were analyzed by using the index of geoaccumulation, US EPA health risk assessment model and spearman correlation coefficient method. The results showed that the average contents of Cd (1.11 mg/kg), Cu (67.33 mg/kg), Ni (41.77 mg/kg), Hg (mg/kg), Pb (437.41 mg/kg), Cr (131.92 mg/kg), As...