Articles | Volume 19, issue 23
https://doi.org/10.5194/acp-19-14607-2019
© Author(s) 2019. 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-19-14607-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Effects of water-soluble organic carbon on aerosol pH
Michael A. Battaglia Jr.
Department of Chemical, Biochemical and Environmental Engineering,
University of Maryland, Baltimore County, Baltimore, MD 21250, USA
Rodney J. Weber
School of Earth and Atmospheric Sciences, Georgia Institute of
Technology, Atlanta, GA 30332, USA
Athanasios Nenes
School of Earth and Atmospheric Sciences, Georgia Institute of
Technology, Atlanta, GA 30332, USA
Institute for Chemical Engineering Sciences, Foundation for Research and Technology – Hellas, Patras, 26504, Greece
Laboratory of Atmospheric Processes and their Impacts, School of
Architecture, Civil and Environmental Engineering, Ecole Polytechnique
Fédérale de Lausanne, 1015, Lausanne, Switzerland
Christopher J. Hennigan
CORRESPONDING AUTHOR
Department of Chemical, Biochemical and Environmental Engineering,
University of Maryland, Baltimore County, Baltimore, MD 21250, USA
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Latest update: 06 Jun 2023
Short summary
The effects of water-soluble organic carbon (WSOC) on aerosol pH were characterized for aqueous-phase particles containing a mixture of inorganics and organics. The ISORROPIA-II and E-AIM models were used in conjunction with AIOMFAC to quantify the effect of organics on aerosol pH through (1) changes to the aerosol liquid water content and (2) changes to the hydrogen ion activity coefficient. The study included both organic acids and nonacids, at RH levels ranging from 70 to 90 %.
The effects of water-soluble organic carbon (WSOC) on aerosol pH were characterized for...
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