Articles | Volume 22, issue 8
https://doi.org/10.5194/acp-22-5651-2022
© Author(s) 2022. 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-22-5651-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Apr 2022
Research article |
| 28 Apr 2022
| 28 Apr 2022
Aqueous chemical bleaching of 4-nitrophenol brown carbon by hydroxyl radicals; products, mechanism, and light absorption
Bartłomiej Witkowski
CORRESPONDING AUTHOR
Faculty of Chemistry, University of Warsaw, al. Żwirki i Wigury
101, 02-089 Warsaw, Poland
Priyanka Jain
Faculty of Chemistry, University of Warsaw, al. Żwirki i Wigury
101, 02-089 Warsaw, Poland
Tomasz Gierczak
Faculty of Chemistry, University of Warsaw, al. Żwirki i Wigury
101, 02-089 Warsaw, Poland
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Short summary
This article describes a comprehensive investigation of the aqueous oxidation of 4-nitrophenol (4NP) by hydroxyl radicals (OH). The reaction was carried out in a laboratory photoreactor. We report the formation of key intermediates under different pH conditions and the evolution of the light absorption of the reaction solution. The results provide new insights into the formation and removal (chemical bleaching) of light-absorbing organic aerosols (atmospheric brown carbon).
This article describes a comprehensive investigation of the aqueous oxidation of 4-nitrophenol...
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