中国科学院重庆绿色智能技术研究院机构知识库

QQ客服 官方微博 反馈留言

	PM2.5-Bound Heavy Metals in Southwestern China: Characterization, Sources, and Health Risks
	Han, Yan1; Wang, Zhichao1; Zhou, Jiawei1; Che, Hanxiong1; Tian, Mi2; Wang, Huanbo3; Shi, Guangming4; Yang, Fumo4; Zhang, Shumin5; Chen, Yang1
	2021-07-01
摘要	The health risks of PM2.5-bound heavy metals have attracted extensive attention recently. In order to evaluate those deleterious effects on human health more accurately, and to propose proper measures to reduce health risks of air pollution, the conduction of a source-specific health risk assessment is necessary. Based on daily collected PM2.5 samples at different functional sites during winter 2019 in a megacity Chongqing, China, combining source apportionment results from PMF and health risk assessment from the U.S. EPA, the source-specific health risks from PM2.5-bound heavy metals were given. Six types of PM2.5 sources have been identified, coal burning (25.5%), motor vehicles (22.8%), industrial emissions (20.5%), biomass burning (15.9%), dust (7.8%), and ship emissions (7.5%). Results showed that the total hazard quotient (HQ) was 0.32 and the total carcinogenic risks (CR) were 2.09 x 10(-6) for children and 8.36 x 10(-6) for adults, implying certain risks for local residents. Industrial emissions related with Cr posed both the highest carcinogenic risk and noncarcinogenic risk (contributing 25% CR and 36% HQ). Coal combustion (associated with Cr, As, and Mn) contributed 15.46% CR and 20.64% HQ, while biomass burning and motor vehicles shared 19.99% and 19.05% of the total CR, respectively. This work indicated that health risks of air pollution sources were the combined effects of the source contribution and chemical components. In order to control the health risks of PM2.5 to the local residents, the priority of targeted emission sources should be adopted for industrial emissions, biomass burning, vehicle emissions, and coal combustion sources.
关键词	PM2 5 heavy metal health risk sources air pollution
DOI	10.3390/atmos12070929
发表期刊	ATMOSPHERE
卷号	12期号:7页码:13
通讯作者	Chen, Yang(chenyang@cigit.ac.cn)
收录类别	SCI
WOS记录号	WOS:000686211300001
语种	英语