气候变化领域集成服务门户(CCPortal): Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze

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DOI	10.1073/pnas.2022179118
	Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze
	Wang J.; Ye J.; Zhang Q.; Zhao J.; Wu Y.; Li J.; Liu D.; Li W.; Zhang Y.; Wu C.; Xie C.; Qin Y.; Lei Y.; Huang X.; Guo J.; Liu P.; Fu P.; Li Y.; Lee H.C.; Choi H.; Zhang J.; Liao H.; Chen M.; Sun Y.; Ge X.; Martin S.T.; Jacob D.J.
发表日期	2021
ISSN	00278424
卷号	118 期号:8
英文摘要	Secondary organic aerosol (SOA) produced by atmospheric oxidation of primary emitted precursors is a major contributor to fine particulate matter (PM2.5) air pollution worldwide. Observations during winter haze pollution episodes in urban China show that most of this SOA originates from fossil-fuel combustion but the chemical mechanisms involved are unclear. Here we report field observations in a Beijing winter haze event that reveal fast aqueous-phase conversion of fossil-fuel primary organic aerosol (POA) to SOA at high relative humidity. Analyses of aerosol mass spectra and elemental ratios indicate that ring-breaking oxidation of POA aromatic species, leading to functionalization as carbonyls and carboxylic acids, may serve as the dominant mechanism for this SOA formation. A POA origin for SOA could explain why SOA has been decreasing over the 2013–2018 period in response to POA emission controls even as emissions of volatile organic compounds (VOCs) have remained flat. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Aqueous-phase oxidation; Fossil-fuel combustion emissions; Polycyclic aromatic hydrocarbons; Secondary organic aerosol
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180529
作者单位	Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States; Department of Environmental Toxicology, University of California, Davis, CA 95616, United States; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, 310027, China; Institute of Oceanography, Minjiang University, Fuzhou, 350108, China; Institute of Mass Spectrometry and Atmospheric Environment, Jinan University, Guangzhou, 510632, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; School of Earth and Atmosp...
推荐引用方式 GB/T 7714	Wang J.,Ye J.,Zhang Q.,et al. Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze[J],2021,118(8).
APA	Wang J..,Ye J..,Zhang Q..,Zhao J..,Wu Y..,...&Jacob D.J..(2021).Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze.Proceedings of the National Academy of Sciences of the United States of America,118(8).
MLA	Wang J.,et al."Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze".Proceedings of the National Academy of Sciences of the United States of America 118.8(2021).