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Acid-extractable heavy metals in PM2.5 over Xi'an, China: seasonal distribution and meteorological influence

文献类型：期刊论文

作者Liu, Pingping1,2; Zhang, Yiling1; Wu, Tiantian1; Shen, Zhenxing1,2; Xu, Hongmei1,2,3
刊名ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
出版日期2019-11-13
卷号26期号:33页码:11
关键词PM2 5 Heavy metals Acid-extractable fractions Bioavailability index Meteorological factors
ISSN号0944-1344
DOI10.1007/s11356-019-06366-6
通讯作者Xu, Hongmei(xuhongmei@xjtu.edu.cn)
英文摘要To investigate the acid-extractable heavy metals in fine particulate matter (PM2.5) over Xi'an, China, 24-h PM2.5 samples were collected every 3 days from December 2015 through November 2016. The bioavailable fraction, termed here the bioavailability index (BI), of PM2.5-bound metal (As, Ba, Cd, Co, Cu, Mn, Ni, Pb, Ti, V, and Zn) and potential influencing factors, including relative humidity, temperature, air pressure, wind speed, visibility, PM2.5, and SO2 concentrations, were assessed in this study. The annual average PM2.5 concentration was 50.6 +/- 35.6 mu g m(-3), 1.5 times higher than the Chinese national secondary standard. Zn, Ti, and As were the most abundant elements of those analyzed in the PM2.5 samples, accounting for 72.1% of total quantity. The seasonal variations and enrichment factor analysis of heavy metals revealed that coal combustion in winter was a crucial source of Pb, Co, Cu, and Zn; and dust resuspension in spring contributed considerable Mn, Ti, and V. The acid-extractable fractions of the measured metals varied. Pb, Cu, Mn, and Zn exhibited relatively high acid-extractable concentrations and BI values. Pb was mostly in the acid-extractable fraction in PM2.5, with a mean BI value of 66.7%, the highest in summer (69.8%) and lowest in winter (63.7%). Moreover, the BIs of PM2.5-bound heavy metals were inversely related to temperature and wind speed, whereas positively correlated with relative humidity, SO2, and PM2.5 concentration in this study. This study assessed the seasonal distribution and meteorological influence of acid-extractable heavy metals, providing a deeper understanding of atmospheric heavy metal pollution in Xi'an, China.
WOS关键词PARTICULATE-BOUND ELEMENTS ; YANGTZE-RIVER DELTA ; ATMOSPHERIC PARTICLE ; CHEMICAL-COMPOSITION ; SOURCE APPORTIONMENT ; RISK-ASSESSMENT ; TRACE-ELEMENTS ; HEALTH-RISKS ; AEROSOL-PARTICLES ; HAZE EVENTS
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] ; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control - Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)[KHK1712]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000496213300002
出版者SPRINGER HEIDELBERG
资助机构State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences ; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control - Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
源URL[http://ir.ieecas.cn/handle/361006/12951]  
专题地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
地球环境研究所_粉尘与环境研究室
通讯作者Xu, Hongmei
作者单位1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China
3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Pingping,Zhang, Yiling,Wu, Tiantian,et al. Acid-extractable heavy metals in PM2.5 over Xi'an, China: seasonal distribution and meteorological influence[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2019,26(33):11.
APA Liu, Pingping,Zhang, Yiling,Wu, Tiantian,Shen, Zhenxing,&Xu, Hongmei.(2019).Acid-extractable heavy metals in PM2.5 over Xi'an, China: seasonal distribution and meteorological influence.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(33),11.
MLA Liu, Pingping,et al."Acid-extractable heavy metals in PM2.5 over Xi'an, China: seasonal distribution and meteorological influence".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.33(2019):11.

入库方式： OAI收割

来源：地球环境研究所

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