Articles | Volume 23, issue 16
https://doi.org/10.5194/acp-23-9245-2023
© 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-23-9245-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Aug 2023
Research article |
| 22 Aug 2023
| 22 Aug 2023
Seasonal variations in the production of singlet oxygen and organic triplet excited states in aqueous PM2.5 in Hong Kong SAR, South China
Yuting Lyu
School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, China
Yin Hau Lam
School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, China
Yitao Li
School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, China
Nadine Borduas-Dedekind
Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, China
State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong SAR, China
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Cited
18 citations as recorded by crossref.
- Singlet Oxygen and Triplet Excited State Organics Produced by Primary Biomass Burning Organic Aerosol from Wood, Dung, Straw, and Plastic Fuels: Role of Solvent-Dependent Photochemistry C. Sardena et al. https://doi.org/10.1021/acsestair.5c00462
- Kinetics and quantum yield of photosensitized reactions from substituted phenols via chemical probe approach D. Hu et al. https://doi.org/10.1016/j.atmosenv.2025.121419
- Singlet oxygen is produced from brown carbon-containing cooking organic aerosols (BrCOA) under indoor lighting N. Borduas-Dedekind et al. https://doi.org/10.1039/D3EA00167A
- Acidity of Atmospheric Waters Induces Enhanced H2O2 Production through Photosensitized Chemistry of Phenolic Substances Y. Xie et al. https://doi.org/10.1021/acsearthspacechem.4c00318
- Photochemical Production of Singlet Oxygen by Toronto Road Dust A. Burnett et al. https://doi.org/10.1021/acs.est.4c09631
- Acidity-Driven Singlet Oxygen Production in Atmospheric Aerosols through Photosensitized Oxidation of Dicarboxylic Acids and Phenols Y. Ren et al. https://doi.org/10.1021/acsearthspacechem.5c00237
- Efficient Production of Reactive Oxidants by Atmospheric Bacterial-Derived Organic Matter in the Aqueous Phase Y. Liu et al. https://doi.org/10.1021/acs.est.5c01526
- Evaluating the potential secondary contribution of photosensitized chemistry to OH production in aqueous aerosols E. Petersen-Sonn et al. https://doi.org/10.1039/D4EA00103F
- Measuring molecular singlet oxygen (1O2*) from atmospheric photosensitizers: Intercomparison of techniques, irradiation setups, data analysis and protocol recommendations K. Gemmell et al. https://doi.org/10.5194/amt-19-3961-2026
- Tropospheric Multiphase Chemistry: Excited Triplet States Compete with OH Radicals and Singlet Molecular Oxygen E. Petersen-Sonn et al. https://doi.org/10.1021/acsearthspacechem.4c00295
- Light Exposure of Wood Smoke Aerosol: Connecting Optical Properties, Oxidation, Radical Formation, and Chemical Composition C. Liu-Kang et al. https://doi.org/10.1021/acsestair.3c00063
- Aqueous Oxidation of Biomass-Burning Furans by Singlet Molecular Oxygen (1O2*) S. Arciva et al. https://doi.org/10.1021/acs.est.4c10778
- Effects of copper on chemical kinetics and brown carbon formation in the aqueous ˙OH oxidation of phenolic compounds J. Yang et al. https://doi.org/10.1039/D4EM00191E
- Singlet oxygen generation from secondary photoproducts of benzo[a]pyrene D. Cagan et al. https://doi.org/10.1111/php.70082
- Complexities of Photosensitization in Atmospheric Particles Z. Liang et al. https://doi.org/10.1021/acsestair.4c00112
- Connecting Brown Carbon Composition and Physicochemical Properties of Aqueous Urban PM2.5 to their Photosensitized Production of Singlet Oxygen and Organic Triplet Excited States Y. Lyu et al. https://doi.org/10.1021/acs.est.5c15686
- Rapid Nighttime Darkening of Biomass Burning Brown Carbon by Nitrate Radicals Is Suppressed by Prior Daytime Photochemical Aging C. Liu-Kang et al. https://doi.org/10.1021/acsearthspacechem.5c00003
- Surprisingly robust photochemistry in subarctic particles during winter: evidence from photooxidants L. Heinlein et al. https://doi.org/10.5194/acp-25-9561-2025
18 citations as recorded by crossref.
- Singlet Oxygen and Triplet Excited State Organics Produced by Primary Biomass Burning Organic Aerosol from Wood, Dung, Straw, and Plastic Fuels: Role of Solvent-Dependent Photochemistry C. Sardena et al. https://doi.org/10.1021/acsestair.5c00462
- Kinetics and quantum yield of photosensitized reactions from substituted phenols via chemical probe approach D. Hu et al. https://doi.org/10.1016/j.atmosenv.2025.121419
- Singlet oxygen is produced from brown carbon-containing cooking organic aerosols (BrCOA) under indoor lighting N. Borduas-Dedekind et al. https://doi.org/10.1039/D3EA00167A
- Acidity of Atmospheric Waters Induces Enhanced H2O2 Production through Photosensitized Chemistry of Phenolic Substances Y. Xie et al. https://doi.org/10.1021/acsearthspacechem.4c00318
- Photochemical Production of Singlet Oxygen by Toronto Road Dust A. Burnett et al. https://doi.org/10.1021/acs.est.4c09631
- Acidity-Driven Singlet Oxygen Production in Atmospheric Aerosols through Photosensitized Oxidation of Dicarboxylic Acids and Phenols Y. Ren et al. https://doi.org/10.1021/acsearthspacechem.5c00237
- Efficient Production of Reactive Oxidants by Atmospheric Bacterial-Derived Organic Matter in the Aqueous Phase Y. Liu et al. https://doi.org/10.1021/acs.est.5c01526
- Evaluating the potential secondary contribution of photosensitized chemistry to OH production in aqueous aerosols E. Petersen-Sonn et al. https://doi.org/10.1039/D4EA00103F
- Measuring molecular singlet oxygen (1O2*) from atmospheric photosensitizers: Intercomparison of techniques, irradiation setups, data analysis and protocol recommendations K. Gemmell et al. https://doi.org/10.5194/amt-19-3961-2026
- Tropospheric Multiphase Chemistry: Excited Triplet States Compete with OH Radicals and Singlet Molecular Oxygen E. Petersen-Sonn et al. https://doi.org/10.1021/acsearthspacechem.4c00295
- Light Exposure of Wood Smoke Aerosol: Connecting Optical Properties, Oxidation, Radical Formation, and Chemical Composition C. Liu-Kang et al. https://doi.org/10.1021/acsestair.3c00063
- Aqueous Oxidation of Biomass-Burning Furans by Singlet Molecular Oxygen (1O2*) S. Arciva et al. https://doi.org/10.1021/acs.est.4c10778
- Effects of copper on chemical kinetics and brown carbon formation in the aqueous ˙OH oxidation of phenolic compounds J. Yang et al. https://doi.org/10.1039/D4EM00191E
- Singlet oxygen generation from secondary photoproducts of benzo[a]pyrene D. Cagan et al. https://doi.org/10.1111/php.70082
- Complexities of Photosensitization in Atmospheric Particles Z. Liang et al. https://doi.org/10.1021/acsestair.4c00112
- Connecting Brown Carbon Composition and Physicochemical Properties of Aqueous Urban PM2.5 to their Photosensitized Production of Singlet Oxygen and Organic Triplet Excited States Y. Lyu et al. https://doi.org/10.1021/acs.est.5c15686
- Rapid Nighttime Darkening of Biomass Burning Brown Carbon by Nitrate Radicals Is Suppressed by Prior Daytime Photochemical Aging C. Liu-Kang et al. https://doi.org/10.1021/acsearthspacechem.5c00003
- Surprisingly robust photochemistry in subarctic particles during winter: evidence from photooxidants L. Heinlein et al. https://doi.org/10.5194/acp-25-9561-2025
Saved (final revised paper)
Latest update: 03 Jul 2026
Short summary
We measured singlet oxygen (1O2*) and triplet excited states of organic matter (3C*) in illuminated aqueous extracts of PM2.5 collected in different seasons at different sites in Hong Kong SAR, South China. In contrast to the locations, seasonality had significant effects on 3C* and 1O2* production due to seasonal variations in long-range air mass transport. The steady-state concentrations of 3C* and 1O2* correlated with the concentration and absorbance of water-soluble organic carbon.
We measured singlet oxygen (1O2*) and triplet excited states of organic matter (3C*) in...
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