Characteristics and health risk assessment of heavy metals exposure via household dust from urban area in Chengdu, China
Characteristics and health risk assessment of heavy metals exposure via household dust from urban area in Chengdu, China
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成都市城区家庭灰尘重金属暴露特征及健康风险评估
DOI：
10.1016/j.scitotenv.2017.11.144
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发表时间：
2018-04-01
影响因子：
9.8
通讯作者：
Zhu, Xue-Mei
中科院分区：
文献类型：
--
作者：
Cheng, Zhang;Chen, Liu-Jun;Zhu, Xue-Mei
为了解成都市城市生活环境中灰尘中重金属（Cr、Cd、Pb、Zn、Cu、Ni）的分布特征，采集了成都市6个区90份灰尘样品。在采样过程中还记录了房屋和居民的信息，以确定家庭灰尘中的重金属与房屋属性之间的相关性。对污染源和影响因子进行了主成分分析和聚类分析。与其他县（市）相比，该地区家庭尘中Pbmg.kg除Cr外，成都市生活灰尘中重金属含量均高于街道灰尘。统计分析结果表明，交通污染源和合金腐蚀是导致生活灰尘中重金属浓度升高的重要因素。重金属含量与地面水平呈负相关（p < 0.05）。经口摄入是Pb、Zn、Cu、Ni通过家庭粉尘暴露于居民的重要途径，经皮接触是Cr、Cd通过家庭粉尘暴露于居民的主要途径。成都市居民生活灰尘中的重金属对人体有轻微的非致癌和致癌风险。(C)2017爱思唯尔B. V.保留所有权利。
To investigate the characteristics of heavymetals (Cr, Cd, Pb, Zn, Cu and Ni) in household dust in urban household environment of Chengdu, China, 90 household dust samples were collected from 6 districts of the city. The information of houses and residents were also recorded during dust sampling to identify the correlations between heavy metals in household dust and the house attributes. And also the principal component analysis and cluster analysis for sources and impactor factors. The concentrations of Pb (123 mg.kg(-1)), Zn (675 mg.kg(-1)), Cu (190 mg.kg(-1)), Cr (82.7 mg.kg(-1)), Cd (2.37 mg.kg(-1)) and Ni (52.6 mg.kg(-1)) in household dust are in low or moderate levels when compare with that from other counties or areas. The heavy metals of household dust samples from Chengdu is higher concentrations than that in the street dust from Chengdu, except for Cr. Statistical analysis result showed traffic sources and corrosion of alloys are important factors contributing to the rise concentrations of heavy metals in household dust. In addition, there is negative correlation (p < 0.05) between the heavy metals concentrations and floor levels. The ingestion is the important pathway for Pb, Zn, Cu and Ni via household dust exposure to the residents, and the dermal contact was identified as a main route for Cr and Cd in household dust exposure to the residents. There are minor non-carcinogenic and carcinogenic risks from the heavy metals in household dust for the residents in Chengdu. (C) 2017 Elsevier B.V. All rights reserved.