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The formation and evolution of secondary organic aerosol during summer in Xi'an: Aqueous phase processing in fog-rain days

文献类型：期刊论文

作者Duan, Jing1; Huang, Ru-Jin1,2; Gu, Yifang1,3; Lin, Chunshui1; Zhong, Haobin1,3; Wang, Ying1; Yuan, Wei1,3; Ni, Haiyan1; Yang, Lu1; Chen, Yang4
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2021-02-20
卷号756页码:10
ISSN号0048-9697
关键词Secondary organic aerosol Aqueous-phase oxidized organic aerosol Fog-rain days Photochemical oxidation
DOI10.1016/j.scitotenv.2020.144077
通讯作者Huang, Ru-Jin(rujin.huang@ieecas.cn)
英文摘要Secondary organic aerosol (SOA) is an important contributor to organic aerosol (OA), however, the model simulations of SOA concentrations and oxidation states remain significant uncertainties because of inadequate cognition of its formation and aging chemistry. In this study, SOA formation and evolution processes during summer in XIan were investigated, based on high-resolution online measurements of non-refractory PM2.5 (NR-PM2.5) species and OA source apportionment using positive matrix factorization. The results showed that the total SOA, including less oxidized-oxygenated OA (LO-OOA), more oxidized-oxygenated OA (MO-OOA), and aqueous-phase-processed oxygenated OA (aq-OOA), on average constituted 69% of OA, and 43% of NR-PM2.5, suggesting the high atmospheric oxidation capacity and the dominance of SOA during summer in Xi'an. Photochemical oxidation processes dominated the summertime SOA formation both during non-fog-rain days and fog-rain days, which were responsible for the formation of both LO-OOA and MO-OOA. Consistently, LO-OOA and MO-OOA in total contributed 59% to OA during non-fog-rain days and 56% to OA during fog-rain days, respectively. On the contrary, aq-OOA was mainly observed during fog-rain days, which increased dramatically from 2% of OA during non-fog-rain days to 19% of OA during fog-rain days with the mass concentration increasing accordingly from 0.3 mu g m(-3) to 2.5 mu g m(-3). Episodic analyses further highlighted the persistently high RH high aerosol liquid water content (ALWC) was the driving factor of aq-OOA formation, and high O-x condition could further enhance its formation. Meanwhile, air masses from east and southeast were much favorable for the formation of long-time fog-rain days, which facilitated aq-OOA production during summer in Xi'an. (C) 2020 Elsevier B.V. All rights reserved.
WOS关键词MASS-SPECTROMETER ; CHEMICAL-COMPOSITION ; MULTILINEAR ENGINE ; SUBMICRON AEROSOLS ; HAZE EVENTS ; CHINA ; VISIBILITY ; EMISSIONS ; POLLUTION ; WATER
资助项目National Natural Science Foundation of China (NSFC)[41925015] ; National Natural Science Foundation of China (NSFC)[91644219] ; National Natural Science Foundation of China (NSFC)[41877408] ; Chinese Academy of Sciences[ZDBS-LY-DQC001] ; Chinese Academy of Sciences[XDB40000000] ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology[SKLLQGTD1801]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:000603487500123
资助机构National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology
源URL[http://ir.ieecas.cn/handle/361006/15768]  
专题地球环境研究所_粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Huang, Ru-Jin
作者单位1.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Inst Earth Environm, State Key Lab Loess & Quaternary Geol,Key Lab Aer, Xian 710061, Peoples R China
2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
5.Aerodyne Res Inc, Billerica, MA 01821 USA
6.Natl Univ Ireland Galway, Ryan Inst, Sch Phys, Univ Rd, Galway H91 CF50, Ireland
7.Natl Univ Ireland Galway, Ryan Inst, Ctr Climate & Mr Pollut Studies, Univ Rd, Galway H91 CF50, Ireland
推荐引用方式
GB/T 7714		 Duan, Jing,Huang, Ru-Jin,Gu, Yifang,et al. The formation and evolution of secondary organic aerosol during summer in Xi'an: Aqueous phase processing in fog-rain days[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,756:10.
APA Duan, Jing.,Huang, Ru-Jin.,Gu, Yifang.,Lin, Chunshui.,Zhong, Haobin.,...&O'Dowd, Colin.(2021).The formation and evolution of secondary organic aerosol during summer in Xi'an: Aqueous phase processing in fog-rain days.SCIENCE OF THE TOTAL ENVIRONMENT,756,10.
MLA Duan, Jing,et al."The formation and evolution of secondary organic aerosol during summer in Xi'an: Aqueous phase processing in fog-rain days".SCIENCE OF THE TOTAL ENVIRONMENT 756(2021):10.

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来源：地球环境研究所

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