Seasonal variations and chemical characteristics of PM(2.5) in Wuhan, central China

The Science of the Total Environment
Fan ZhangGan Zhang

Abstract

PM2.5 samples were collected at an urban site (WD) and a suburban site (TH) in Wuhan from August 2012 to July 2013. The mass concentrations of water-soluble inorganic ions, carbonaceous species and elements of PM2.5 were measured. The annual mean concentrations of PM2.5 were 106.5 μg/m(3) and 114.9 μg/m(3) at WD and TH, respectively. The chemical compositions of PM2.5 at WD were similar to those at TH and the fractions of the major components of PM2.5 in Wuhan were in the following order of trace elements<chloride<EC (elemental carbon)<ammonium<nitrate<soil dust<sulfate<OM (organic matter). As the secondary ionic aerosols (SIA) and dominant ions, SO4(2-), NO3(-) and NH4(+) all exhibited strong seasonal distributions, consistently with the lowest values in summer and the highest in winter. OM was the most abundant component in PM2.5, the lowest concentrations of which were observed in summer at both sites, while the highest concentrations of OC (organic carbon) appeared in winter at WD and autumn at TH, respectively. The highest OC concentration observed in autumn was tightly related to the biomass burning near the suburban site. The crustal elements (Mg, K, Ca and Fe) dominated the 20 detected elements in PM2.5, with the highes...Continue Reading

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Citations

Feb 19, 2016·Environment International·Zhen ChengJiming Hao
Jul 11, 2016·The Science of the Total Environment·Die FangXin Qian
Mar 31, 2017·Environmental Research·Zhen ChengNaiqiang Yan
Jun 7, 2017·Technology and Health Care : Official Journal of the European Society for Engineering and Medicine·Shihong YueJun Chen
Jan 10, 2019·International Journal of Environmental Research and Public Health·Jun QinXiang Zheng
Mar 10, 2017·Neurotoxicity Research·Lewis ChengTatia M C Lee
Oct 1, 2016·Journal of the Air & Waste Management Association·Si WangXianjue Zheng
May 31, 2018·International Journal of Environmental Research and Public Health·Mao MaoYan Yin
Aug 25, 2018·Biological Trace Element Research·Hao-Long ZengLiming Cheng
Jul 26, 2019·Environmental Science and Pollution Research International·Hao-Long ZengLiming Cheng
Apr 3, 2019·International Journal of Environmental Research and Public Health·Guozhi CaoJinnan Wang
Jan 20, 2019·Environmental Science and Pollution Research International·Zhipeng ZhaoChengyu Jin
Dec 29, 2016·The Science of the Total Environment·Ying XiongYan Hu
Nov 2, 2021·Environmental Science & Technology·Aaron van DonkelaarRandall V Martin
Nov 29, 2021·The Science of the Total Environment·Zexuan ZhangShihua Qi

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