Articles | Volume 19, issue 23
https://doi.org/10.5194/acp-19-14607-2019
https://doi.org/10.5194/acp-19-14607-2019
Research article
 | 
03 Dec 2019
Research article |  | 03 Dec 2019

Effects of water-soluble organic carbon on aerosol pH

Michael A. Battaglia Jr., Rodney J. Weber, Athanasios Nenes, and Christopher J. Hennigan

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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 %.
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