Spatiotemporal variation, sources, and secondary transformation potential of volatile organic compounds in Xi'an, China

doi:10.5194/acp-21-4939-2021

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Spatiotemporal variation, sources, and secondary transformation potential of volatile organic compounds in Xi'an, China
	Song, Mengdi 2; Li, Xin 2; Yang, Suding 2; Yu, Xuena 2; Zhou, Songxiu 2; Yang, Yiming 2; Chen, Shiyi 2; Dong, Huabin 2; Liao, Keren 2; Chen, Qi 2
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2021-03-30
卷号	21 期号:6 页码:4939-4958
ISSN号	1680-7316
DOI	10.5194/acp-21-4939-2021
通讯作者	Li, Xin(li_xin@pku.edu.cn)
英文摘要	As 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.
资助项目	National Natural Science Foundation of China[91844301] ; National Key R&D Program of China[2017YFC0209400]
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000636064900003
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/16173]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Li, Xin
作者单位	1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 2.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China
推荐引用方式 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.