IEECAS OpenIR  > 粉尘与环境研究室
Comparison of dicarboxylic acids and related compounds in aerosol samples collected in Xi'an, China during haze and clean periods
Cheng, CL (Cheng, Chunlei)[ 1 ]; Wang, GH (Wang, Gehui)[ 1,2 ]; Zhou, BH (Zhou, Bianhong)[ 3 ]; Meng, JJ (Meng, Jingjing)[ 1 ]; Li, JJ (Li, Jianjun)[ 1 ]; Cao, JJ (Cao, Junji)[ 1 ]; Xiao, S (Xiao, Shun)[ 1,4 ]
2013
Source PublicationAtmospheric Environment
Volume81Pages:443-449
Subtype期刊论文
Abstract

PM10 aerosols from Xi'an, a mega city of China in winter and summer, 2009 were measured for secondary organic aerosols (SOA) (i.e., dicarboxylic acids (DCA), keto-carboxylic acids, and α-dicarbonyls), water-soluble organic (WSOC) and inorganic carbon (WSIC), elemental carbon (EC) and organic carbon (OC). Molecular compositions of SOA on haze and clean days in both seasons were compared to investigate their sources and formation mechanisms. DCA in the samples were 1843±810ngm-3 in winter and 1259±781ngm-3 in summer, respectively, which is similar and even higher than those measured in 2003. Oxalic acid (C2, 1162±570ngm-3 in winter and 1907±707ngm-3 in summer) is the predominant species of DCA, followed by t-phthalic (tPh) in winter and phthalic (Ph) in summer. Such a molecular composition is different from those in other Asian cities where succinic acid (C4) or malonic acid (C3) is the second highest species, which is mostly due to significant emissions from household combustion of coal and open burning of waste material in Xi'an. Mass ratios of C2/diacids, diacids/WSOC, WSOC/OC and individual diacid-C/WSOC are higher on the haze days than on the clean days in both seasons, suggesting an enhanced SOA production under the haze condition. We also found that the haze samples are acidic while the clean samples are almost neutral. Such a difference in particle acidity is consistent with the enhanced SOA production, because acid-catalysis is an important aqueous-phase formation pathway of SOA. Gly/mGly mass ratio showed higher values on haze days than on clean day in both seasons. We comprehensively investigated the ratio in literature and found a consistent pattern. Based on our observation results and those documented data we proposed for the first time that concentration ratio of Gly/mGly can be taken as an indicator of aerosol ageing.

KeywordPm10 Dicarboxylic Acids Secondary Organic Aerosols Haze Formation Mechanism
DOI10.1016/j.atmosenv.2013.09.013
Indexed BySCI ; EI
Language英语
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9901
Collection粉尘与环境研究室
Corresponding AuthorWang, GH (Wang, Gehui)[ 1,2 ]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.Department of Environmental Science, Xi’an Jiaotong University, Xi’an 710049, China;
3.Department of Geographical Science and Environment Engineering, Baoji University of Arts and Sciences, Baoji 721013, China;
4.Climate Center of Shaanxi Meteorological Bureau, Xi’an 710014, China
Recommended Citation
GB/T 7714
Cheng, CL ,Wang, GH ,Zhou, BH ,et al. Comparison of dicarboxylic acids and related compounds in aerosol samples collected in Xi'an, China during haze and clean periods[J]. Atmospheric Environment,2013,81:443-449.
APA Cheng, CL .,Wang, GH .,Zhou, BH .,Meng, JJ .,Li, JJ .,...&Xiao, S .(2013).Comparison of dicarboxylic acids and related compounds in aerosol samples collected in Xi'an, China during haze and clean periods.Atmospheric Environment,81,443-449.
MLA Cheng, CL ,et al."Comparison of dicarboxylic acids and related compounds in aerosol samples collected in Xi'an, China during haze and clean periods".Atmospheric Environment 81(2013):443-449.
Files in This Item:
File Name/Size DocType Version Access License
Comparison of dicarb(622KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cheng, CL (Cheng, Chunlei)[ 1 ]]'s Articles
[Wang, GH (Wang, Gehui)[ 1,2 ]]'s Articles
[Zhou, BH (Zhou, Bianhong)[ 3 ]]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cheng, CL (Cheng, Chunlei)[ 1 ]]'s Articles
[Wang, GH (Wang, Gehui)[ 1,2 ]]'s Articles
[Zhou, BH (Zhou, Bianhong)[ 3 ]]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cheng, CL (Cheng, Chunlei)[ 1 ]]'s Articles
[Wang, GH (Wang, Gehui)[ 1,2 ]]'s Articles
[Zhou, BH (Zhou, Bianhong)[ 3 ]]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.