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DOI | 10.1073/pnas.2022179118 |
Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze | |
Junfeng Wang; Jianhuai Ye; Qi Zhang; Jian Zhao; Yangzhou Wu; Jingyi Li; Dantong Liu; Weijun Li; Yange Zhang; Cheng Wu; Conghui Xie; Yiming Qin; Yali Lei; Xiangpeng Huang; Jianping Guo; Pengfei Liu; Pingqing Fu; Yongjie Li; Hyun Chul Lee; Hyoungwoo Choi; Jie Zhang; Hong Liao; Mindong Chen; Yele Sun; Xinlei Ge; Scot T. Martin; Daniel J. Jacob | |
2021-02-23 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2021 |
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. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/315657 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Junfeng Wang,Jianhuai Ye,Qi Zhang,et al. Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze[J]. Proceedings of the National Academy of Science,2021. |
APA | Junfeng Wang.,Jianhuai Ye.,Qi Zhang.,Jian Zhao.,Yangzhou Wu.,...&Daniel J. Jacob.(2021).Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze.Proceedings of the National Academy of Science. |
MLA | Junfeng Wang,et al."Aqueous production of secondary organic aerosol from fossil-fuel emissions in winter Beijing haze".Proceedings of the National Academy of Science (2021). |
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