| Residential College | false |
| Status | 已發表Published |
| 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.J.; Lee, H.C.; Choi, H.; Zhang, J.; Liao, H.; Chen, M.; Sun, Y.; Ge, X. ; Martin, S.T.; Jacob, D.J.
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| 2021-02-23 | |
| Source Publication | Proceedings of the National Academy of Sciences
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| ISSN | 1091-6490 |
| Pages | In press-000 |
| Abstract | 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. |
| Keyword | Aqueous Phase Soa Haze |
| DOI | 10.1073/pnas.2022179118 |
| URL | View the original |
| Language | 英語English |
| The Source to Article | PB_Publication |
| Fulltext Access | |
| Citation statistics | |
| Document Type | Journal article |
| Collection | DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING |
| Corresponding Author | Ge, X.; Jacob, D.J. |
| Recommended Citation 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]. Proceedings of the National Academy of Sciences, 2021, In press-000. |
| APA | 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.J.., Lee, H.C.., ...& 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, In press-000. |
| 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 (2021):In press-000. |
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