IEECAS OpenIR  > 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
2019-04
Source PublicationCHEMOSPHERE
Volume220Pages:760-765
Contribution Rank2
AbstractAtmospheric 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.
KeywordElemental composition PM2.5 PM10 Sources
Indexed BySCI ; SCIE
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10935
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorLiu, GJ (Liu, Guijian)
Affiliation1.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
Recommended Citation
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.
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