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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Cited
22 citations as recorded by crossref.
- Resolving the overlooked photochemical nitrophenol transformation mechanism induced by nonradical species under visible light S. Liu et al. https://doi.org/10.1073/pnas.2401452121
- Mixing state and influence factors controlling diurnal variation of particulate nitrophenol compounds at a suburban area in northern China Z. Guo et al. https://doi.org/10.1016/j.envpol.2024.123368
- Co-photolysis of mixed chromophores affects atmospheric lifetimes of brown carbon Y. Wang et al. https://doi.org/10.1039/D3EA00073G
- The High Pressure Inside Aerosol Particles Enhances Photochemical Reactions of Biomass Burning Compounds C. Dubois et al. https://doi.org/10.1021/acsearthspacechem.4c00011
- Measurement report: Bio-physicochemistry of tropical clouds at Maïdo (Réunion, Indian Ocean): overview of results from the BIO-MAÏDO campaign M. Leriche et al. https://doi.org/10.5194/acp-24-4129-2024
- Chemical Characterization of Primary Water-Soluble Organic Gas Emissions from African Biomass Burning C. Christensen et al. https://doi.org/10.1021/acsestair.5c00229
- New water-soluble, toxic tracers of wood burning identified in fine brown carbon aerosol using a non-target approach V. Nguyen et al. https://doi.org/10.5194/acp-25-10965-2025
- Aging of α-Pinene Secondary Organic Aerosol by Hydroxyl Radicals in the Aqueous Phase: Kinetics and Products B. Witkowski et al. https://doi.org/10.1021/acs.est.2c07630
- Efficient Formation of Secondary Organic Aerosols from the Aqueous Oxidation of Terpenoic 1,2-Diols by OH P. Jain et al. https://doi.org/10.1021/acs.est.4c06347
- Molecular-Specific Aromatic Compounds Absorption Drives Divergent Radiative Forcing in High-Altitude Air and Snow over the Tibetan Plateau X. Wu et al. https://doi.org/10.1021/acs.est.5c16974
- Aqueous phase photolysis of 4-nitrocatechol: Reaction kinetics, evolutions of chemical composition, light absorption and oxidation potential R. Lei et al. https://doi.org/10.1016/j.atmosenv.2024.120981
- Observational Evidence of Brown Carbon Photobleaching in Urban Atmosphere at Molecular Level Y. Qiu et al. https://doi.org/10.1021/acs.estlett.4c00647
- Nitrate-Photolysis Shortens the Lifetimes of Brown Carbon Tracers from Biomass Burning Y. Liu et al. https://doi.org/10.1021/acs.est.4c06123
- Photolysis Mechanism of Solid Nitro Polycyclic Aromatic Compounds to Form Reactive Nitrogen Species and Environmental Implications F. Li et al. https://doi.org/10.1021/acsestair.5c00320
- Important yet Overlooked HONO Source from Aqueous-phase Photochemical Oxidation of Nitrophenols W. Yang et al. https://doi.org/10.1021/acs.est.4c05048
- Experimental characterization of nitrophenols components in aromatic secondary organic aerosol in presence of sodium nitrate fine particles M. Zhu et al. https://doi.org/10.1016/j.apr.2025.102847
- Contribution of Carbonyl Chromophores in Secondary Brown Carbon from Nighttime Oxidation of Unsaturated Heterocyclic Volatile Organic Compounds K. Chen et al. https://doi.org/10.1021/acs.est.3c08872
- Continuous Measurement and Molecular Compositions of Atmospheric Water‐Soluble Brown Carbon in the Nearshore Marine Boundary Layer of Northern China: Secondary Formation and Influencing Factors H. Li et al. https://doi.org/10.1029/2023JD038565
- The significant contribution of biomass burning to methanol-soluble nitrogenous organics and its evolution during the highly-humid haze event in urban Wuhan X. He et al. https://doi.org/10.1038/s41612-025-01118-5
- Nocturnal evolution of physicochemical characteristics of water-soluble and insoluble organic aerosols in a polluted environment: New insights from a combined online and offline study M. Anand et al. https://doi.org/10.1016/j.envpol.2026.128059
- Ultrasound-assisted reverse co-precipitation synthesis of biphasic Zn, Ni, or Co spinel ferrite/hematite nanocomposite for the photocatalytic degradation of nitrobenzene V. Reyes-Villegas et al. https://doi.org/10.1007/s10853-025-11893-4
- Atmospheric Photochemical Oxidation of 4-Nitroimidazole N. Kondapalli et al. https://doi.org/10.3390/atmos16050624
22 citations as recorded by crossref.
- Resolving the overlooked photochemical nitrophenol transformation mechanism induced by nonradical species under visible light S. Liu et al. https://doi.org/10.1073/pnas.2401452121
- Mixing state and influence factors controlling diurnal variation of particulate nitrophenol compounds at a suburban area in northern China Z. Guo et al. https://doi.org/10.1016/j.envpol.2024.123368
- Co-photolysis of mixed chromophores affects atmospheric lifetimes of brown carbon Y. Wang et al. https://doi.org/10.1039/D3EA00073G
- The High Pressure Inside Aerosol Particles Enhances Photochemical Reactions of Biomass Burning Compounds C. Dubois et al. https://doi.org/10.1021/acsearthspacechem.4c00011
- Measurement report: Bio-physicochemistry of tropical clouds at Maïdo (Réunion, Indian Ocean): overview of results from the BIO-MAÏDO campaign M. Leriche et al. https://doi.org/10.5194/acp-24-4129-2024
- Chemical Characterization of Primary Water-Soluble Organic Gas Emissions from African Biomass Burning C. Christensen et al. https://doi.org/10.1021/acsestair.5c00229
- New water-soluble, toxic tracers of wood burning identified in fine brown carbon aerosol using a non-target approach V. Nguyen et al. https://doi.org/10.5194/acp-25-10965-2025
- Aging of α-Pinene Secondary Organic Aerosol by Hydroxyl Radicals in the Aqueous Phase: Kinetics and Products B. Witkowski et al. https://doi.org/10.1021/acs.est.2c07630
- Efficient Formation of Secondary Organic Aerosols from the Aqueous Oxidation of Terpenoic 1,2-Diols by OH P. Jain et al. https://doi.org/10.1021/acs.est.4c06347
- Molecular-Specific Aromatic Compounds Absorption Drives Divergent Radiative Forcing in High-Altitude Air and Snow over the Tibetan Plateau X. Wu et al. https://doi.org/10.1021/acs.est.5c16974
- Aqueous phase photolysis of 4-nitrocatechol: Reaction kinetics, evolutions of chemical composition, light absorption and oxidation potential R. Lei et al. https://doi.org/10.1016/j.atmosenv.2024.120981
- Observational Evidence of Brown Carbon Photobleaching in Urban Atmosphere at Molecular Level Y. Qiu et al. https://doi.org/10.1021/acs.estlett.4c00647
- Nitrate-Photolysis Shortens the Lifetimes of Brown Carbon Tracers from Biomass Burning Y. Liu et al. https://doi.org/10.1021/acs.est.4c06123
- Photolysis Mechanism of Solid Nitro Polycyclic Aromatic Compounds to Form Reactive Nitrogen Species and Environmental Implications F. Li et al. https://doi.org/10.1021/acsestair.5c00320
- Important yet Overlooked HONO Source from Aqueous-phase Photochemical Oxidation of Nitrophenols W. Yang et al. https://doi.org/10.1021/acs.est.4c05048
- Experimental characterization of nitrophenols components in aromatic secondary organic aerosol in presence of sodium nitrate fine particles M. Zhu et al. https://doi.org/10.1016/j.apr.2025.102847
- Contribution of Carbonyl Chromophores in Secondary Brown Carbon from Nighttime Oxidation of Unsaturated Heterocyclic Volatile Organic Compounds K. Chen et al. https://doi.org/10.1021/acs.est.3c08872
- Continuous Measurement and Molecular Compositions of Atmospheric Water‐Soluble Brown Carbon in the Nearshore Marine Boundary Layer of Northern China: Secondary Formation and Influencing Factors H. Li et al. https://doi.org/10.1029/2023JD038565
- The significant contribution of biomass burning to methanol-soluble nitrogenous organics and its evolution during the highly-humid haze event in urban Wuhan X. He et al. https://doi.org/10.1038/s41612-025-01118-5
- Nocturnal evolution of physicochemical characteristics of water-soluble and insoluble organic aerosols in a polluted environment: New insights from a combined online and offline study M. Anand et al. https://doi.org/10.1016/j.envpol.2026.128059
- Ultrasound-assisted reverse co-precipitation synthesis of biphasic Zn, Ni, or Co spinel ferrite/hematite nanocomposite for the photocatalytic degradation of nitrobenzene V. Reyes-Villegas et al. https://doi.org/10.1007/s10853-025-11893-4
- Atmospheric Photochemical Oxidation of 4-Nitroimidazole N. Kondapalli et al. https://doi.org/10.3390/atmos16050624
Saved (final revised paper)
Latest update: 07 Aug 2026
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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