| Title: | "A comprehensive investigation on volatile organic compounds (VOCs) in 2018 in Beijing, China: Characteristics, sources and behaviours in response to O(3) formation" |
| Author(s): | Li C; Liu Y; Cheng B; Zhang Y; Liu X; Qu Y; An J; Kong L; Zhang Y; Zhang C; Tan Q; Feng M; |
| Address: | "State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Chinese Research Academy of Environmental Sciences, Beijing 100012, China. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: liuxingang@bnu.edu.cn. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. Electronic address: quyu@mail.iap.ac.cn. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. Chengdu Academy of Environmental Sciences, Chengdu 610072, China" |
| DOI: | 10.1016/j.scitotenv.2021.150247 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Observations of volatile organic compounds (VOCs) are a prerequisite for evaluating the effectiveness of government efforts targeting VOC pollution. Here, based on the one-year online VOC measurement in 2018 in Beijing, systematic analyses and model simulation were conducted to illuminate VOC characteristics, emission sources, regional hotspots and behaviours in response to O(3) formation. The observed mean VOC concentration in 2018 was 29.12 +/- 17.64 ppbv declined distinctly compared to that in 2015 and 2016. Vehicle exhaust (39.95%), natural gas/liquefied petroleum gas (22.04%) and industrial sources (20.64%) were the main contributors to VOCs in Beijing. Regional transport, mainly from the south-south-east (SSE) and south-south-west (SSW), quantitatively contributed 36.65%-55.06% to VOCs based on our developed method. O(3) sensitivity tended to be in the transition regime in summer identified by ground-based and satellite observations. Strong solar radiation along with high temperature and low humidity aggravated O(3) pollution that was further intensified by regional transport from southern polluted regions. The model simulation determined that turning off CH(3)CHO related reactions brought about the most predominantly short-term and long-run O(3) reduction, indicating that control policies in VOC species should be tailored, instead of one-size-fits-all. Overall, region-collaborated and active VOC-species-focused strategies on VOC controls are imperative" |
| Keywords: | *Air Pollutants/analysis Beijing China Environmental Monitoring *Ozone/analysis *Volatile Organic Compounds/analysis O(3) sensitivity Regional transport contribution Source apportionment VOCs WRF-Chem; |
| Notes: | "MedlineLi, Chenlu Liu, Yafei Cheng, Bingfen Zhang, Yuepeng Liu, Xingang Qu, Yu An, Junling Kong, Liuwei Zhang, Yingying Zhang, Chen Tan, Qinwen Feng, Miao eng Netherlands 2021/09/26 Sci Total Environ. 2022 Feb 1; 806(Pt 1):150247. doi: 10.1016/j.scitotenv.2021.150247. Epub 2021 Sep 10" |
