| 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 Author | Li, Xin(li_xin@pku.edu.cn) |
| 2021-03-30 | |
| Source Publication | ATMOSPHERIC CHEMISTRY AND PHYSICS
 |
| ISSN | 1680-7316 |
| Volume | 21Issue:6Pages:4939-4958 |
| Abstract | 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. |
| DOI | 10.5194/acp-21-4939-2021 |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[91844301] ; National Key R&D Program of China[2017YFC0209400] |
| WOS Research Area | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| Funding Organization | National Natural Science Foundation of China ; National Key R&D Program of China |
| WOS Subject | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS ID | WOS:000636064900003 |
| Publisher | COPERNICUS GESELLSCHAFT MBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ieecas.cn/handle/361006/16174 |
| Collection | 粉尘与环境研究室 |
| Corresponding Author | Li, Xin |
| Affiliation | 1.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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