北京市地表灰尘中Cu的分布及健康风险评价  

Distribution of Cu in Urban Dust of Beijing and the Health Risk Assessment

作　　者：于洋[1] 马俊花 宋宁宁[1] 王晰[1] 沈珍瑶[1] 杨志峰[1] 李迎霞[1] 

机构地区：[1]北京师范大学环境学院 水环境模拟国家重点实验室,北京100875 [2]宁夏交通科学研究所,银川750001

出　　处：《生态毒理学报》2014年第4期744-750,共7页Asian Journal of Ecotoxicology

基　　金：国家自然科学基金面上项目(51278054);国家基金委创新研究群体科学基金(51121003)

摘　　要：为了解典型重金属污染物铜(Cu)在城市环境中的污染特征及其可能带来的健康风险,在北京市四环以内的典型功能区采集了30个地表灰尘样品并测定了Cu的浓度。结果表明,地表灰尘样品中Cu的平均浓度为102.53μg·g^(-1),远高于北京市土壤背景值。商业区Cu浓度的均值更达到了169μg·g^(-1)。居住区、街道和商业区单位面积上Cu的负荷较高,对人类的健康威胁较大。健康风险评价结果显示,地表灰尘中Cu引起的非致癌风险对儿童的威胁程度高于成人,手-口摄人的方式是非致癌风险最主要的途径。In order to understand the characteristics of copper （Cu） pollution in the urban environment and the related health risk, thirty urban dust samples were collected from typical functional areas within the 4th ring of Beijing. The concentration of Cu was determined. The results showed that the mean concentration of Cu in urban dust was 102.53 μg·g（-1）, which was much higher than the soil background value of Beijing. The mean concentration of Cu in commercial area was as much as 169 μg·g（-1）. Higher Cu load per unit area was found in residential area, streets and commercial area, which might bring more threats to the human beings. The results of health risk assessments showed that children face higher non-carcinogenic risk from Cu than adults and direct ingestion of urban dust is the main way of non-carcinogenic risk.

关 键 词：北京 地表灰尘 铜 健康风险评价 

分 类 号：X171.5[环境科学与工程—环境科学]