Ozone and its precursors at an urban site in the Yangtze River Delta since clean air action plan phase II in China
文献类型：期刊论文
| 作者 | Fang, Hua3,4; Wang, Wenjing3; Wang, Ran2; Xu, Hongling3; Zhang, Ying1; Wu, Ting3,4; Zhou, Ruicheng3; Zhang, Jianxi3; Ruan, Zhirong3; Li, Feng3 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2024-04-15 |
| 卷号 | 347页码:9 |
| 关键词 | Ozone pollution Meteorological influence Machine learning Volatile organic compounds Nitrogen oxides Clean air action plan phase II |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2024.123769 |
| 英文摘要 | In response to regional ozone (O 3 ) pollution, Chinese government has implemented air pollution control measures in recent years. Here, a case study was performed at an O 3 -polluted city, Wuhu, in Yangtze River Delta region of China to investigate O 3 variation trend and the relationship to its precursors after implementation of Clean Air Action Plan Phase II, which aims to reduce O 3 pollution. The results showed that peak O 3 concentration was effectively reduced since Clean Air Action Plan Phase II. Due to significant NOx reduction, O 3 formation tended to shift from volatile organic compound (VOC)-limited regimes to NOx-limited regimes during 2018 - 2022. VOC/NOx ratios measured in 2022 revealed that peak O 3 concentration tended to respond positively to NOx. Apart from high -O 3 period, Wuhu was still in a VOC-limited regime. The relationship of maximum daily 8-h ozone average and NO 2 followed a lognormal distribution with an inflection point at 20 mu g m - 3 of NO 2 , suggesting that Wuhu should conduct joint control of VOC and NOx with a focus on VOC reduction before the inflection point. Alkenes and aromatics were suggested to be preferentially controlled due to their higher ozone formation potentials. Using random forest meteorological normalization method, meteorology had a positive effect on O 3 concentration in 2018, 2019 and 2022, but a negative effect in 2020 and 2021. The meteorology could explain 44.0 +/- 19.1% of the O 3 variation during 2018 - 2022. High temperature favors O 3 production and O 3 pollution occurred more easily when temperature was over 25 degrees C, while high relative humidity inhibits O 3 generation and no O 3 pollution was found at relative humidity above 70%. This study unveils some new insights into the trend of urban O 3 pollution in Yangtze River Delta region since Clean Air Action Plan Phase II and the findings provide important references for formulating control strategies against O 3 pollution. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001221118600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77000]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Wu, Ting |
| 作者单位 | 1.Wuhu Ecol & Environm Monitoring Ctr Anhui Prov, Wuhu 241005, Peoples R China 2.Wuhu Inst Ecol Environm Sci, Wuhu 241000, Peoples R China 3.Anhui Normal Univ, Sch Ecol & Environm, Wuhu 241000, Peoples R China 4.Ctr Cooperat Innovat Recovery & Reconstruct Degrad, Wuhu 241000, Peoples R China 5.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 7.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Hua,Wang, Wenjing,Wang, Ran,et al. Ozone and its precursors at an urban site in the Yangtze River Delta since clean air action plan phase II in China[J]. ENVIRONMENTAL POLLUTION,2024,347:9. |
| APA | Fang, Hua.,Wang, Wenjing.,Wang, Ran.,Xu, Hongling.,Zhang, Ying.,...&Wang, Xinming.(2024).Ozone and its precursors at an urban site in the Yangtze River Delta since clean air action plan phase II in China.ENVIRONMENTAL POLLUTION,347,9. |
| MLA | Fang, Hua,et al."Ozone and its precursors at an urban site in the Yangtze River Delta since clean air action plan phase II in China".ENVIRONMENTAL POLLUTION 347(2024):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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