Similarities and differences in PM10 and PM2.5 concentrations, chemical compositions and sources in Hefei City, China

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Similarities and differences in PM10 and PM2.5 concentrations, chemical compositions and sources in Hefei City, China
	Xue, HQ (Xue, Huaqin)1,2; Liu, GJ (Liu, Guijian)1,2; Zhang, H (Zhang, Hong)1,3; Hu, RY (Hu, Ruoyu)1; Wang, X (Wang, Xin)1
刊名	CHEMOSPHERE
	2019-04
卷号	220 页码:760-765
关键词	Elemental composition PM2.5 PM10 Sources
产权排序	2
英文摘要	Atmospheric particulates were sampled in Hefei City, China from October 2016 to January 2017 to compare chemical compositions and sources of PM2.5 (particle size smaller than 2.5 mu m) and PM10 (particle size smaller than 10 pm). The mean levels of PM2.5 and PM10 were 81 and 109 mu g/m(3), which are higher than the health threshold levels regulated by national and international standards. During the sampling period, AQI (Air Quality Index) was strongly correlated with PM2.5 (Pearson's coefficient r = 0.94) rather than PM10, concentrations. The PM2.5/PM10 ratios were approximately 0.7, revealing the characteristics of fine particle pollution. Pollution elements (S, Zn, Cu and Pb) took up a large proportion of the composition and had high enrichment factors of 437, 385, 20 and 53, respectively, in PM10. Coal combustion and high-tech manufacture industry discharges were suggested to be the main pollution sources of both PM2.5 and PM10. The PM2.5/PM10 ratios of anthropogenic element concentrations were much higher than ratios of earth crust element. As compared to PM10, S and Pb in PM2.5 had larger EFs, indicating that pollution elements were predominantly enriched in PM2.5. Furthermore, a paired sample t-test confirmed similar sources of PM2.5 and PM10. Our study provides basic database to evaluate the heavy metal pollution status of atmospheric particulates in Chinese cities.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/10935]
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~）
通讯作者	Liu, GJ (Liu, Guijian)
作者单位	1.CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China 2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shanxi 710075, China 3.Anhui Environment Science Institute, Hefei, Anhui 233000, China
推荐引用方式 GB/T 7714	Xue, HQ ,Liu, GJ ,Zhang, H ,et al. Similarities and differences in PM10 and PM2.5 concentrations, chemical compositions and sources in Hefei City, China[J]. CHEMOSPHERE,2019,220:760-765.
APA	Xue, HQ ,Liu, GJ ,Zhang, H ,Hu, RY ,&Wang, X .(2019).Similarities and differences in PM10 and PM2.5 concentrations, chemical compositions and sources in Hefei City, China.CHEMOSPHERE,220,760-765.
MLA	Xue, HQ ,et al."Similarities and differences in PM10 and PM2.5 concentrations, chemical compositions and sources in Hefei City, China".CHEMOSPHERE 220(2019):760-765.