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Spatiotemporal variation, sources, and secondary transformation potential of volatile organic compounds in Xi'an, China
Song, Mengdi1; Li, Xin1; Yang, Suding1; Yu, Xuena1; Zhou, Songxiu1; Yang, Yiming1; Chen, Shiyi1; Dong, Huabin1; Liao, Keren1; Chen, Qi1; Lu, Keding1; Zhang, Ningning2; Cao, Junji2; Zeng, Limin1; Zhang, Yuanhang1
Corresponding AuthorLi, Xin(li_xin@pku.edu.cn)
2021-03-30
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
Volume21Issue:6Pages:4939-4958
AbstractAs critical precursors of ozone (O-3) and secondary organic aerosols, volatile organic compounds (VOCs) play a vital role in air quality, human health, and climate change. In this study, a campaign of comprehensive field observations and VOC grid sampling was conducted in Xi'an, China, from 20 June to 20 July 2019 to identify the spatiotemporal concentration levels, sources, and secondary transformation potential of VOCs. During the observation period, the average VOC concentrations at the Chanba (CB), Di Huan Suo (DHS), Qinling (QL), and gridded sampling sites were 27.8 +/- 8.9, 33.8 +/- 10.5, 15.5 +/- 5.8, and 29.1 +/- 8.4 ppb, respectively. Vehicle exhaust was the primary source of VOC emissions in Xi'an, and the contributions of vehicle exhaust to VOCs at the CB, DHS, and QL sites were 41.3 %, 30.6 %, and 23.6 %-41.4 %, respectively. While industrial emissions were the second-largest source of VOCs in urban areas, contributions from aging sources were high in rural areas. High potential source contribution function values primarily appeared in eastern and southern Xi'an near the sampling site, which indicates that Xi'an exhibits a strong local VOC source. Moreover, alkenes, aromatics, and oxygenated VOCs played a dominant role in secondary transformation, which is a major concern in reducing O-3 pollution in Xi'an.
DOI10.5194/acp-21-4939-2021
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[91844301] ; National Key R&D Program of China[2017YFC0209400]
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000636064900003
PublisherCOPERNICUS GESELLSCHAFT MBH
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/16174
Collection粉尘与环境研究室
Corresponding AuthorLi, Xin
Affiliation1.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
Recommended Citation
GB/T 7714
Song, Mengdi,Li, Xin,Yang, Suding,et al. Spatiotemporal variation, sources, and secondary transformation potential of volatile organic compounds in Xi'an, China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2021,21(6):4939-4958.
APA Song, Mengdi.,Li, Xin.,Yang, Suding.,Yu, Xuena.,Zhou, Songxiu.,...&Zhang, Yuanhang.(2021).Spatiotemporal variation, sources, and secondary transformation potential of volatile organic compounds in Xi'an, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(6),4939-4958.
MLA Song, Mengdi,et al."Spatiotemporal variation, sources, and secondary transformation potential of volatile organic compounds in Xi'an, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.6(2021):4939-4958.
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