Enhanced daytime secondary aerosol formation driven by gas-particle partitioning in downwind urban plumes
文献类型：期刊论文
| 作者 | Cai, Mingfu8,9,10; Ye, Chenshuo11; Yuan, Bin8,9; Huang, Shan8,9; Zheng, E.8,9; Yang, Suxia3; Wang, Zelong8,9; Lin, Yi8,9; Li, Tiange8,9; Hu, Weiwei4,5
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| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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| 出版日期 | 2024-11-27 |
| 卷号 | 24期号:22页码:13065-13079 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-24-13065-2024 |
| 英文摘要 | Anthropogenic emissions from city clusters can significantly enhance secondary organic aerosol (SOA) formation in the downwind regions, while the mechanism is poorly understood. To investigate the effect of pollutants within urban plumes on organic aerosol (OA) evolution, a field campaign was conducted at a downwind site of the Pearl River Delta region of China in the fall of 2019. A time-of-flight chemical ionization mass spectrometer coupled with the Filter Inlet for Gases and Aerosols (FIGAERO-CIMS) was used to probe the gas- and particle-phase molecular composition and thermograms of organic compounds. For air masses influenced by urban pollution, strong daytime SOA formation through gas-particle partitioning was observed, resulting in higher OA volatility. The obvious SOA enhancement was mainly attributed to the gas-particle partitioning of high-volatility (semi-volatile organic compounds + intermediate volatility organic compounds + volatile organic compounds, mu g m(-3)) organic vapors. Using the equilibrium equation could underestimate the contribution of high-volatility organic vapors, since the volatility of these species in the particle phase was lower than that in the gas phase. We speculated that the elevated NOx concentration could suppress the formation of highly oxidized products, resulting in a smooth increase of low-volatility (extremely low volatility organic compounds + low volatility organic compounds, mu g m(-3)) organic vapors. Evidence has shown that urban pollutants (NOx and VOCs) could enhance the oxidizing capacity, while the elevated VOCs were mainly responsible for promoting daytime SOA formation by increasing the RO2 production rate. Our results highlight the important role of urban anthropogenic pollutants in SOA control in the suburban region. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001364458500001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81995]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Yuan, Bin |
| 作者单位 | 1.Sun Yat Sen Univ, Inst Earth Climate & Environm Syst, Zhuhai 519082, Peoples R China 2.Guangzhou Huangpu Dist Meteorol Bur, Guangzhou 510530, Peoples R China 3.Guangzhou Res Inst Environm Protect Co Ltd, Guangzhou 510620, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 6.Sun Yat Sen Univ, Sch Atmospher Sci, Guangdong Prov Key Lab Climate Change & Nat Disast, Zhuhai 519082, Peoples R China 7.Guangdong Environm Monitoring Ctr, Guangzhou 510308, Peoples R China 8.Jinan Univ, Guangdong Hong Kong Macau Joint Lab Collaborat Inn, Guangzhou 510632, Peoples R China 9.Jinan Univ, Inst Environm & Climate Res, Guangzhou 51143, Peoples R China 10.MEE, South China Inst Environm Sci, Guangdong Prov Engn Lab Air Pollut Control, Guangdong Prov Key Lab Water & Air Pollut Control, Guangzhou 510655, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Mingfu,Ye, Chenshuo,Yuan, Bin,et al. Enhanced daytime secondary aerosol formation driven by gas-particle partitioning in downwind urban plumes[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2024,24(22):13065-13079. |
| APA | Cai, Mingfu.,Ye, Chenshuo.,Yuan, Bin.,Huang, Shan.,Zheng, E..,...&Shao, Min.(2024).Enhanced daytime secondary aerosol formation driven by gas-particle partitioning in downwind urban plumes.ATMOSPHERIC CHEMISTRY AND PHYSICS,24(22),13065-13079. |
| MLA | Cai, Mingfu,et al."Enhanced daytime secondary aerosol formation driven by gas-particle partitioning in downwind urban plumes".ATMOSPHERIC CHEMISTRY AND PHYSICS 24.22(2024):13065-13079. |
入库方式： OAI收割
来源：广州地球化学研究所
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