Articles | Volume 23, issue 12
https://doi.org/10.5194/acp-23-7103-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-7103-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Jun 2023
Research article |
| 28 Jun 2023
| 28 Jun 2023
Photoaging of phenolic secondary organic aerosol in the aqueous phase: evolution of chemical and optical properties and effects of oxidants
Wenqing Jiang
Department of Environmental Toxicology, University of California Davis, 1
Shields Ave., Davis, CA 95616, USA
Agricultural and Environmental Chemistry Graduate Program, University of California Davis, 1 Shields Ave., Davis, CA 95616, USA
Christopher Niedek
Department of Environmental Toxicology, University of California Davis, 1
Shields Ave., Davis, CA 95616, USA
Agricultural and Environmental Chemistry Graduate Program, University of California Davis, 1 Shields Ave., Davis, CA 95616, USA
Cort Anastasio
Agricultural and Environmental Chemistry Graduate Program, University of California Davis, 1 Shields Ave., Davis, CA 95616, USA
Department of Land, Air, and Water Resources, University of
California Davis, 1 Shields Ave., Davis, CA 95616, USA
Department of Environmental Toxicology, University of California Davis, 1
Shields Ave., Davis, CA 95616, USA
Agricultural and Environmental Chemistry Graduate Program, University of California Davis, 1 Shields Ave., Davis, CA 95616, USA
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Manuscript not accepted for further review
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Short summary
We studied how aqueous-phase secondary organic aerosol (aqSOA) form and evolve from a phenolic carbonyl commonly present in biomass burning smoke. The composition and optical properties of the aqSOA are significantly affected by photochemical reactions and are dependent on the oxidants' concentration and identity in water. During photoaging, the aqSOA initially becomes darker, but prolonged aging leads to the formation of volatile products, resulting in significant mass loss and photobleaching.
We studied how aqueous-phase secondary organic aerosol (aqSOA) form and evolve from a phenolic...
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