气候变化领域集成服务门户(CCPortal): Chemical characterization and source analysis of water-soluble inorganic ions in PM2.5 from a plateau city of Kunming at different seasons

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DOI	10.1016/j.atmosres.2019.104687
	Chemical characterization and source analysis of water-soluble inorganic ions in PM2.5 from a plateau city of Kunming at different seasons
	Guo W.; Zhang Z.; Zheng N.; Luo L.; Xiao H.; Xiao H.
发表日期	2020
ISSN	0169-8095
卷号	234
英文摘要	Water-soluble inorganic ions (WSIIs) in PM2.5 from different cities have been studied in previous studies. However, the studies of WSIIs in plateau cities are relative deficient. Due to differences in topography, climate and emission sources, the WSIIs characteristics of plateau cities are expected to be different. Here, we determined the concentrations of WSIIs (SO4 2−, NO3 −, NH4 +, Ca2+, Mg2+, Na+, K+, F−, Cl−, NO2 −) in PM2.5 from different seasons of Kunming, a typical plateau city in southwest China. The data will improve our understanding of the chemical characterization and source of PM2.5 in plateau environment. Our results showed that the secondary aerosols were the main pollutants (contributing >50% to PM2.5) in PM2.5 of Kunming, which mainly from coal combustion, agricultural activities and vehicle exhaust. Seasonally, high volatility of the NO3 − and NH4 + and washout effects of rainfall in hot months (wet seasons) were favorable for the decreased of pollutants, while high emission, poor dispersion conditions and low removal rate could lead to the increased of pollutants in cold months (dry seasons). It suggested that adequate NH3 and intense solar radiation promotes the photochemical reactions of SO2, NOx and NH3 to form NH4HSO4, (NH4)2SO4 and NH4NO3. High temperature in hot months would promote the volatilization of NH4NO3 in Kunming. © 2019 Elsevier B.V.
英文关键词	Kunming; PM2.5; Seasonality; Source identification; Water-soluble inorganic ions (WSIIs)
学科领域	Ammonia; Chemical analysis; Indium plating; Ions; Nitrogen oxides; Photochemical reactions; Pollution; Topography; Kunming; PM2.5; Seasonality; Source identification; Water soluble inorganic ions; Coal combustion; air quality; anthropogenic source; atmospheric deposition; atmospheric pollution; ion exchange; particulate matter; seasonality; solubility; China; Kunming; Yunnan
语种	英语
scopus关键词	Ammonia; Chemical analysis; Indium plating; Ions; Nitrogen oxides; Photochemical reactions; Pollution; Topography; Kunming; PM2.5; Seasonality; Source identification; Water soluble inorganic ions; Coal combustion; air quality; anthropogenic source; atmospheric deposition; atmospheric pollution; ion exchange; particulate matter; seasonality; solubility; China; Kunming; Yunnan
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120527
作者单位	Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China; College of Water Resources and Environmental Engineering, East China University of Technology, Nanchang, 330013, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China
推荐引用方式 GB/T 7714	Guo W.,Zhang Z.,Zheng N.,et al. Chemical characterization and source analysis of water-soluble inorganic ions in PM2.5 from a plateau city of Kunming at different seasons[J],2020,234.
APA	Guo W.,Zhang Z.,Zheng N.,Luo L.,Xiao H.,&Xiao H..(2020).Chemical characterization and source analysis of water-soluble inorganic ions in PM2.5 from a plateau city of Kunming at different seasons.Atmospheric Research,234.
MLA	Guo W.,et al."Chemical characterization and source analysis of water-soluble inorganic ions in PM2.5 from a plateau city of Kunming at different seasons".Atmospheric Research 234(2020).