Parameterized atmospheric oxidation capacity during summer at an urban site in Taiyuan and implications for O3 pollution control
文献类型：期刊论文
| 作者 | Shao, Bo1; Cui, Yang1; He, Qiusheng3; Guo, Lili1; Gao, Jianrong3; Zhao, Jing3; Wang, Xinming2 |
| 刊名 | ATMOSPHERIC POLLUTION RESEARCH
 |
| 出版日期 | 2024-08-01 |
| 卷号 | 15期号:8页码:13 |
| 关键词 | VOCs AOC OH reactivity Regional transport O-3 |
| ISSN号 | 1309-1042 |
| DOI | 10.1016/j.apr.2024.102181 |
| 英文摘要 | In recent years, summer ozone pollution shows a significant upward trend in many cities of China, affecting human health and ecosystems. The atmospheric oxidation capacity (AOC) is the core driving force for converting primary pollutants into secondary pollutants. In order to better understand the characteristics of AOC in summer, the comprehensive observation of VOCs (including OVOCs) was conducted at an urban site in Taiyuan from July 20 to August 3, 2020. The parameterized analysis of AOC and R-OH was carried out by combining with the simulated photolysis rates (J(O1D), J(NO2) and J(NO3)). The results showed that the mean value of MDA8 O-3, AOC and R-OH were 84.2 ppbv, 2.4 x 10(7) molecules cm(-3) s(-1) and 28.3 s(-1), respectively. The major reductants of AOC were CO (37.6%), isoprene (21.7%) and formaldehyde (16.8%). Diurnal variations of AOC showed a peak at noon, the major oxidants for AOC were OH (97.7%) and O-3 (78.7%) during the daytime and nighttime, respectively. The mean value of MDA8 O-3, AOC and VOCs-AOC during the pollution period (MDA8 O-3 > 75 ppbv) were 33.0%, 45.0% and 59.3% higher than the non-pollution period, respectively. The OH reactivity ratio of NOx and VOCs indicated that O-3 formation occurred under a VOC-limited regime. The backward trajectory analysis showed that VOCs from southwestern airmass had the highest AOC (2.0 x 10(7) molecules cm(-3) s(-1)), and the domain contributors were isoprene (39.0%), formaldehyde (24.9%), acetaldehyde (9.8%) and ethylene (4.4%). This study could provide some references for regulating AOC to alleviate O-3 pollution. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001243885500003 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78453]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | He, Qiusheng |
| 作者单位 | 1.Taiyuan Univ Sci & Technol, Sch Environm & Resources, Taiyuan 030024, Peoples R China 2.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.Shanxi Polytech Coll, Dept Mat Environm Engn, Taiyuan 237016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shao, Bo,Cui, Yang,He, Qiusheng,et al. Parameterized atmospheric oxidation capacity during summer at an urban site in Taiyuan and implications for O3 pollution control[J]. ATMOSPHERIC POLLUTION RESEARCH,2024,15(8):13. |
| APA | Shao, Bo.,Cui, Yang.,He, Qiusheng.,Guo, Lili.,Gao, Jianrong.,...&Wang, Xinming.(2024).Parameterized atmospheric oxidation capacity during summer at an urban site in Taiyuan and implications for O3 pollution control.ATMOSPHERIC POLLUTION RESEARCH,15(8),13. |
| MLA | Shao, Bo,et al."Parameterized atmospheric oxidation capacity during summer at an urban site in Taiyuan and implications for O3 pollution control".ATMOSPHERIC POLLUTION RESEARCH 15.8(2024):13. |
入库方式： OAI收割
来源：广州地球化学研究所
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