Impact of aging on the sources, volatility, and viscosity of organic aerosols in Chinese outflows
文献类型：期刊论文
| 作者 | Feng, Tingting1,2,3,5,6; Wang, Yingkun1,2,3,5,6; Hu, Weiwei2,3,5,6,12 ; Zhu, Ming1,2,3,5,6; Song, Wei2,3,5,6; Chen, Wei1,2,3,5,6; Sang, Yanyan13; Fang, Zheng1,2,3,5,6; Deng, Wei1,2,3,5,6; Fang, Hua1,2,3,5,6,11
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| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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| 出版日期 | 2023-01-16 |
| 卷号 | 23期号:1页码:611-636 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-23-611-2023 |
| 英文摘要 | To investigate the impact of aging on the sources, volatility, and viscosity of organic aerosol (OA) in Chinese outflows, a high-resolution time-of-flight aerosol mass spectrometer (HR-AMS) coupled with a thermodenuder (TD) was deployed in the spring of 2018 in Dongying, which is a regional receptor site of metropolitan emissions in the North China Plain (NCP). The average mass concentration of PM1 is 31.5 +/- 22.7 mu gm(-3), which is mainly composed of nitrate (33 %) and OA (25 %). The source apportionment results show that the OA is mainly contributed by oxygenated OA (OOA) from secondary sources, including background-OOA (33 %) representing a background concentration of OA (2.6 mu gm(-3)) in the NCP area, and transported-OOA (33 %) oxidized from urban emissions. The other two factors include aged hydrocarbon-liked OA (aged-HOA, 28 %) from transported vehicle emissions and biomass burning OA (BBOA, 5 %) from local open burning. The volatility of total OA (average C*=3.2x10(-4) mu gm(-3)) in this study is generally lower than that reported in previous field studies, which is mainly due to the high OA oxidation level resulting from aging processes during transport. The volatilities of OA factors follow the order of background-OOA (average C*=2.7x10(-5) mu gm(-3)) < transported-OOA (3.7x10(-4)mu gm(-3))< aged-HOA (8.1x10(-4)mu gm(-3))< BBOA (0.012 mu gm(-3)). Extremely low volatilities in ambient air indicate that oligomers may exist in aged plumes. The viscosity estimation suggests that the majority of ambient OA in this study behaves as semisolid (60 %), liquifies at higher relative humidity (RH) (21 %), and solidifies (19 %) during noon when the RH is low and the oxidation level is high. Finally, the estimated mixing time of molecules in 200 nm OA varies dramatically from minutes at night to years in the afternoon, emphasizing the need to consider its dynamic kinetic limits when modeling OA. In general, the overall results of this study improve our understanding of the impact of aging on OA volatility and viscosity. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000916534900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/72460]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Hu, Weiwei |
| 作者单位 | 1.Chinese Acad Sci Univ, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Guangdong Prov Key Lab Environm Protect & Resource, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 4.Jinan Univ, Inst Environm & Climate Res, Guangzhou 511443, Peoples R China 5.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 7.Peking Univ Shenzhen Grad Sch, Sch Environm & Energy, Key Lab Urban Habitat Environm Sci & Technol, Key Lab Urban Habitat Environm Sci & Technol, Shenzhen 518055, Peoples R China 8.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA 9.Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 10.Datalystica Ltd, Pk InnovAARE, CH-5234 Villigen, Switzerland |
| 推荐引用方式 GB/T 7714 | Feng, Tingting,Wang, Yingkun,Hu, Weiwei,et al. Impact of aging on the sources, volatility, and viscosity of organic aerosols in Chinese outflows[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2023,23(1):611-636. |
| APA | Feng, Tingting.,Wang, Yingkun.,Hu, Weiwei.,Zhu, Ming.,Song, Wei.,...&Wang, Xinming.(2023).Impact of aging on the sources, volatility, and viscosity of organic aerosols in Chinese outflows.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(1),611-636. |
| MLA | Feng, Tingting,et al."Impact of aging on the sources, volatility, and viscosity of organic aerosols in Chinese outflows".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.1(2023):611-636. |
入库方式： OAI收割
来源：广州地球化学研究所
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