Articles | Volume 21, issue 3
https://doi.org/10.5194/acp-21-2053-2021
© Author(s) 2021. 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-21-2053-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Feb 2021
Research article |
| 11 Feb 2021
| 11 Feb 2021
Effects of liquid–liquid phase separation and relative humidity on the heterogeneous OH oxidation of inorganic–organic aerosols: insights from methylglutaric acid and ammonium sulfate particles
Hoi Ki Lam
Earth System Science Programme, Faculty of Science, The Chinese
University of Hong Kong, Hong Kong, China
Rongshuang Xu
Earth System Science Programme, Faculty of Science, The Chinese
University of Hong Kong, Hong Kong, China
Jack Choczynski
Department of Chemistry, University of California Riverside,
Riverside, CA, USA
James F. Davies
Department of Chemistry, University of California Riverside,
Riverside, CA, USA
Dongwan Ham
Department of Earth and Environmental Sciences, Jeonbuk National
University, Jeollabuk-do, Republic of Korea
Mijung Song
Department of Earth and Environmental Sciences, Jeonbuk National
University, Jeollabuk-do, Republic of Korea
Andreas Zuend
Department of Atmospheric and Oceanic Sciences, McGill University,
Montréal, Quebec, Canada
Wentao Li
Department of Chemistry, The Chinese University of Hong Kong, Hong
Kong, China
Ying-Lung Steve Tse
Department of Chemistry, The Chinese University of Hong Kong, Hong
Kong, China
Man Nin Chan
CORRESPONDING AUTHOR
Earth System Science Programme, Faculty of Science, The Chinese
University of Hong Kong, Hong Kong, China
The Institute of Environment, Energy and Sustainability, The Chinese
University of Hong Kong, Hong Kong, China
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Cited
15 citations as recorded by crossref.
- Viscosity and physical state of sucrose mixed with ammonium sulfate droplets R. Jeong et al. 10.5194/acp-22-8805-2022
- Optical trapping and light scattering in atmospheric aerosol science A. Rafferty et al. 10.1039/D2CP05301B
- Probing the evaporation dynamics of semi-volatile organic compounds to reveal the thermodynamics of liquid–liquid phase separated aerosol J. Choczynski et al. 10.1039/D3SC05164A
- Hygroscopic Growth, Phase Morphology, and Optical Properties of Model Aqueous Brown Carbon Aerosol C. Price et al. 10.1021/acs.est.1c07356
- Beyond the formation: unveiling the atmospheric transformation of organosulfatesviaheterogeneous OH oxidation S. Ng & M. Chan 10.1039/D3CC03700B
- Morphology and phase state of PM2.5 in urban and coastal-rural areas during summer S. Gaikwad et al. 10.3389/fenvs.2023.1142941
- Chemical transformation of a long-chain alkyl organosulfate via heterogeneous OH oxidation: a case study of sodium dodecyl sulfate S. Madeleine Ng et al. 10.1039/D2EA00026A
- Representation of Multiphase OH Oxidation of Amorphous Organic Aerosol for Tropospheric Conditions J. Li & D. Knopf 10.1021/acs.est.0c07668
- Emerging investigator series: surfactants, films, and coatings on atmospheric aerosol particles: a review K. Wokosin et al. 10.1039/D2EA00003B
- Liquid–Liquid Phase Separation Can Drive Aerosol Droplet Growth in Supersaturated Regimes K. Malek et al. 10.1021/acsenvironau.3c00015
- Chemical transformation of <i>α</i>-pinene-derived organosulfate via heterogeneous OH oxidation: implications for sources and environmental fates of atmospheric organosulfates R. Xu et al. 10.5194/acp-22-5685-2022
- Detecting the pH-dependent liquid-liquid phase separation of single levitated aerosol microdroplets via laser tweezers-Raman spectroscopy Y. Tong et al. 10.3389/fphy.2022.969921
- Influence of acidity on liquid–liquid phase transitions of mixed secondary organic aerosol (SOA) proxy–inorganic aerosol droplets Y. Chen et al. 10.5194/acp-23-10255-2023
- A dual-droplet approach for measuring the hygroscopicity of aqueous aerosol J. Choczynski et al. 10.5194/amt-14-5001-2021
- Single-particle Raman spectroscopy for studying physical and chemical processes of atmospheric particles Z. Liang et al. 10.5194/acp-22-3017-2022
15 citations as recorded by crossref.
- Viscosity and physical state of sucrose mixed with ammonium sulfate droplets R. Jeong et al. 10.5194/acp-22-8805-2022
- Optical trapping and light scattering in atmospheric aerosol science A. Rafferty et al. 10.1039/D2CP05301B
- Probing the evaporation dynamics of semi-volatile organic compounds to reveal the thermodynamics of liquid–liquid phase separated aerosol J. Choczynski et al. 10.1039/D3SC05164A
- Hygroscopic Growth, Phase Morphology, and Optical Properties of Model Aqueous Brown Carbon Aerosol C. Price et al. 10.1021/acs.est.1c07356
- Beyond the formation: unveiling the atmospheric transformation of organosulfatesviaheterogeneous OH oxidation S. Ng & M. Chan 10.1039/D3CC03700B
- Morphology and phase state of PM2.5 in urban and coastal-rural areas during summer S. Gaikwad et al. 10.3389/fenvs.2023.1142941
- Chemical transformation of a long-chain alkyl organosulfate via heterogeneous OH oxidation: a case study of sodium dodecyl sulfate S. Madeleine Ng et al. 10.1039/D2EA00026A
- Representation of Multiphase OH Oxidation of Amorphous Organic Aerosol for Tropospheric Conditions J. Li & D. Knopf 10.1021/acs.est.0c07668
- Emerging investigator series: surfactants, films, and coatings on atmospheric aerosol particles: a review K. Wokosin et al. 10.1039/D2EA00003B
- Liquid–Liquid Phase Separation Can Drive Aerosol Droplet Growth in Supersaturated Regimes K. Malek et al. 10.1021/acsenvironau.3c00015
- Chemical transformation of <i>α</i>-pinene-derived organosulfate via heterogeneous OH oxidation: implications for sources and environmental fates of atmospheric organosulfates R. Xu et al. 10.5194/acp-22-5685-2022
- Detecting the pH-dependent liquid-liquid phase separation of single levitated aerosol microdroplets via laser tweezers-Raman spectroscopy Y. Tong et al. 10.3389/fphy.2022.969921
- Influence of acidity on liquid–liquid phase transitions of mixed secondary organic aerosol (SOA) proxy–inorganic aerosol droplets Y. Chen et al. 10.5194/acp-23-10255-2023
- A dual-droplet approach for measuring the hygroscopicity of aqueous aerosol J. Choczynski et al. 10.5194/amt-14-5001-2021
- Single-particle Raman spectroscopy for studying physical and chemical processes of atmospheric particles Z. Liang et al. 10.5194/acp-22-3017-2022
Latest update: 01 May 2024
Short summary
This work demonstrates that organic compounds present at or near the surface of aerosols can be subjected to oxidation initiated by gas-phase oxidants, such as hydroxyl radicals (OH). The heterogeneous reactivity is sensitive to their surface concentrations, which are determined by the phase separation behavior. This results of this work emphasize the effects of phase separation and potentially distinct aerosol morphologies on the chemical transformation of atmospheric aerosols.
This work demonstrates that organic compounds present at or near the surface of aerosols can be...
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