In Situ Observation of Multiphase Oxidation-Driven Secondary Organic Aerosol Formation during Cloud Processing at a Mountain Site in Southern China
文献类型：期刊论文
| 作者 | Gao, Min7; Zhou, Shengzhen6,7; He, Yao5; Zhang, Guohua4 ; Ma, Nan3; Li, Yao7; Li, Fenghua7; Yang, Yuxiang4; Peng, Long3; Zhao, Jun6,7
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
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| 出版日期 | 2023 |
| 卷号 | 10期号:7页码:573-581 |
| 关键词 | CHEMICAL SPECIATION MONITOR PEARL RIVER DELTA MASS-SPECTROMETER ATMOSPHERIC CHEMISTRY AIR-QUALITY TOF-ACSM PHASE PARTICLES PHOTOOXIDATION WATER |
| ISSN号 | 2328-8930 |
| DOI | 10.1021/acs.estlett.3c00331 |
| 英文摘要 | Secondary organic aerosols (SOAs) account for a large fraction of atmospheric fine particles, but the mechanisms of their formation and evolution processes remain unclear. In this study, a ground-based counterflow virtual impactor was used in combination with an online time-of-flight aerosol chemical speciation monitor to investigate the multiphase (gaseous and aqueous) oxidation processes and the SOA influencing factors during cloud events at a mountain site in southern China. Our results showed that the clouds promoted the formation of low-oxidized oxygenated organic aerosol (LO-OOA) and more-oxidized oxygenated organic aerosol (MO-OOA). At night, ozone (O3) and nitrate radicals (NO3?) oxidized volatile organic compounds (VOCs, mostly biogenic VOCs) to the precursors of LO-OOA and were absorbed in the cloud droplets to form LO-OOA, while the hydroxyl radical (?OH) was the main oxidant for LO-OOA during daytime. In the cloud droplets, LO-OOA was further oxidized by ?OH to form MO-OOA. We propose that isoprene can be oxidized to form products in the gas phase and then absorbed by acidic cloud droplets to form 2-methylglyceric acid (2-MG), 2-MG-organosulfate, and 2-MG-organonitrate. This study improves our understanding of SOA formation, driven by multiphase oxidation during cloud events. ? 2023 American Chemical Society. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001008584300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80254]  |
| 专题 | 有机地球化学国家重点实验室 |
| 作者单位 | 1.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing; 100029, China 2.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China 3.Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Institute for Environmental and Climate Research, Jinan University, Guangzhou; 510000, China 4.State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou; 510640, China 5.Institute for Environmental and Climate Research, Jinan University, Guangzhou; 511443, China 6.Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Zhuhai; 519082, China 7.School of Atmospheric Sciences, Sun Yat-sen University, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai; 519082, China |
| 推荐引用方式 GB/T 7714 | Gao, Min,Zhou, Shengzhen,He, Yao,et al. In Situ Observation of Multiphase Oxidation-Driven Secondary Organic Aerosol Formation during Cloud Processing at a Mountain Site in Southern China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2023,10(7):573-581. |
| APA | Gao, Min.,Zhou, Shengzhen.,He, Yao.,Zhang, Guohua.,Ma, Nan.,...&Wang, Xuemei.(2023).In Situ Observation of Multiphase Oxidation-Driven Secondary Organic Aerosol Formation during Cloud Processing at a Mountain Site in Southern China.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,10(7),573-581. |
| MLA | Gao, Min,et al."In Situ Observation of Multiphase Oxidation-Driven Secondary Organic Aerosol Formation during Cloud Processing at a Mountain Site in Southern China".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 10.7(2023):573-581. |
入库方式： OAI收割
来源：广州地球化学研究所
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