Distribution, sources and health risks of heavy metals in indoor dust across China

环境科学 人类健康 环境化学 中国 重金属 污染 污染 健康风险 微粒 环境工程 环境卫生 地理 冶金 化学 材料科学 生态学 有机化学 考古 生物 医学
作者
Mengmeng Wang,Yinyi Lv,Xinyan Lv,Qianhan Wang,Yiyi Li,P. A. Lu,Hao Yu,Pengkun Wei,Zhiguo Cao,Taicheng An
出处
期刊:Chemosphere [Elsevier BV]
卷期号:313: 137595-137595 被引量:26
标识
DOI:10.1016/j.chemosphere.2022.137595
摘要

The potential effects of heavy metals on human health have attracted increasing attention as most people spend up to 90% of their time indoors. Human exposure to heavy metals in indoor dust have only been characterised for limited regions in China, and full-scale data for different functional areas are not available. Therefore, this review analysed the concentrations, contamination characteristics, and potential health risks of seven heavy metals (including zinc (Zn), lead (Pb), copper (Cu), chromium (Cr), nickel (Ni), arsenic (As), and cadmium (Cd)) in indoor dust at 3392 sampling sites in 55 cities across 27 provincial regions of China based on literature data. Results revealed that the median heavy metal concentrations in indoor dust throughout China decreased in the following order: Zn > Pb > Cu > Cr > Ni > As > Cd. Traffic emissions and decorative materials are the primary sources of heavy metal pollution in indoor dust. No considerable non-carcinogenic risk was found for Zn, Cu, Cr, Ni, and Cd in indoor dust, while Pb and As exhibited potential non-carcinogenic risks to children, primarily distributed in cities across Southern China. Meanwhile, the carcinogenic risks posed by Cr and Ni were higher than those posed by As and Cd, especially in Southern China. Therefore, effective measures in Southern China should prioritised for controlling Pb, Cr, Ni and As pollution in indoor dust to reduce human health risk. This review is useful for policy decision-making and protecting human from exposure to heavy metals in indoor dust across China.
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