Bioavailability of heavy metals bounded to PM2.5 in Xi'an, China: seasonal variation and health risk assessment

doi:10.1007/s11356-021-13198-w

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Bioavailability of heavy metals bounded to PM2.5 in Xi'an, China: seasonal variation and health risk assessment
	Wu, Tiantian 1,2; Liu, Pingping 1,2; He, Xintian 1; Xu, Hongmei 1; Shen, Zhenxing 1,2
通讯作者	Liu, Pingping(liupingping@xjtu.edu.cn)
	2021-03-06
发表期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
页码	10
摘要	Studying the characteristics and health risks of heavy metals in atmospheric fine particulate matter (PM2.5) is a crucial component of understanding atmospheric pollution in China. Integrated 24 h PM2.5 samples were collected in winter and summer 2016 in Xi'an, China. The pollution levels, speciation, and health risks of seven PM2.5-bound metal elements (Al, As, Cd, Cr, Ni, Pb, and Zn) were investigated in this study. The average concentration of PM2.5 was 50.1 +/- 30.4 mu g m(-3) and was higher in winter than in summer. Significant seasonal variations in the elements were also observed. The average concentration ratios of Al, As, Cd, Cr, and Pb decreased in summer by 17.5%, 6.4%, 42.5%, 34.1%, and 61.4% compared with their concentrations in winter, respectively, whereas Ni and Zn increased by 37.7% and 7.6% in summer. The soluble and exchangeable fraction (F1) accounted for large proportions of Cd and Pb concentrations, indicating their greater hazard to the environment and human health. Al, As, and Cr mainly existed in the residual state (F4), which had relatively high stability in particulate matter. Ni was consistently distributed in different forms (F1-F4). The bioavailability evaluation indicated that Pb, Cd, Ni, and Zn were potential bioavailable element which exhibited strong biological toxicity. Although the concentration of Pb was very low, its BI value was the highest. The carcinogenic and non-carcinogenic risks of Cr and As were relatively high, and thus require attention from the government and environmental management departments.
关键词	PM2.5 Heavy metals Speciation distribution Bioavailability index Health risk
DOI	10.1007/s11356-021-13198-w
收录类别	SCI ; SCI
语种	英语
资助项目	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences[SKLLQG1712] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences[SKLLQG1722]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences
WOS类目	Environmental Sciences
WOS记录号	WOS:000625738500005
出版者	SPRINGER HEIDELBERG
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16214
专题	黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Liu, Pingping
作者单位	1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Wu, Tiantian,Liu, Pingping,He, Xintian,et al. Bioavailability of heavy metals bounded to PM2.5 in Xi'an, China: seasonal variation and health risk assessment[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2021:10.
APA	Wu, Tiantian,Liu, Pingping,He, Xintian,Xu, Hongmei,&Shen, Zhenxing.(2021).Bioavailability of heavy metals bounded to PM2.5 in Xi'an, China: seasonal variation and health risk assessment.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,10.
MLA	Wu, Tiantian,et al."Bioavailability of heavy metals bounded to PM2.5 in Xi'an, China: seasonal variation and health risk assessment".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021):10.