| Title: | "VOC species controlling O(3) formation in ambient air and their sources in Kaifeng, China" |
| Author(s): | Chen Y; Shi Y; Ren J; You G; Zheng X; Liang Y; Simayi M; Hao Y; Xie S; |
| Address: | "College of Environmental Sciences and Engineering, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Peking University, Beijing, 100871, China. Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232, Villigen-PSI, Switzerland. College of Environmental Sciences and Engineering, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Peking University, Beijing, 100871, China. sdxie@pku.edu.cn" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-023-27595-w |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Print) 0944-1344 (Linking) |
| Abstract: | "The concentration of ozone has been in a rising crescendo in the last decade while the fine particles (PM(2.5)) is gradually decreasing but still at a high level in central China. Volatile organic compounds (VOCs) are the vital precursors of ozone and PM(2.5). A total of 101 VOC species were measured in four seasons at five sites from 2019 to 2021 in Kaifeng. VOC sources and geographic origin of sources were identified by the positive matrix factorization (PMF) model and the hybrid single-particle Lagrangian integrated trajectory transport model. The source-specific OH loss rates (L(OH)) and ozone formation potential (OFP) were calculated to estimate the effects of each VOC source. The average mixing ratios of total VOCs (TVOC) were 43.15 parts per billion (ppb), of which the alkanes, alkenes, aromatics, halocarbons, and oxygenated VOCs respectively accounted for 49%, 12%, 11%, 14%, and 14%. Although the mixing ratios of alkenes were comparatively low, they played a dominant role in the L(OH) and OFP, especially ethene (0.55 s(-1), 7%; 27.11 mug/m(3), 10%) and 1,3-butadiene (0.74 s(-1), 10%; 12.52 mug/m(3), 5%). The vehicle-related source which emitted considerable alkenes ranked as the foremost contributing factor (21%). Biomass burning was probably influenced by other cities in the western and southern Henan and other provinces, Shandong and Hebei" |
| Keywords: | *Air Pollutants/analysis *Volatile Organic Compounds/analysis Environmental Monitoring China *Ozone/analysis Alkenes/analysis Particulate Matter Vehicle Emissions/analysis Central China Hysplit Ozone formation potential Photochemistry Source apportionment; |
| Notes: | "MedlineChen, Yijia Shi, Yuqi Ren, Jie You, Guiying Zheng, Xudong Liang, Yue Simayi, Maimaiti Hao, Yufang Xie, Shaodong eng DQGG0304/National Air Pollution Prevention Joint Research Center of China/ DQGG202129/National Air Pollution Prevention Joint Research Center of China/ Germany 2023/05/23 Environ Sci Pollut Res Int. 2023 Jun; 30(30):75439-75453. doi: 10.1007/s11356-023-27595-w. Epub 2023 May 23" |
