Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 11
Articles | Volume 25, issue 11
https://doi.org/10.5194/acp-25-5633-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-5633-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 11
Research article
 | 
06 Jun 2025
Research article |  | 06 Jun 2025

Partitioning of ionic surfactants in aerosol droplets containing glutaric acid, sodium chloride, or sea salts

Alison Bain, Kunal Ghosh, Konstantin Tumashevich, Nønne L. Prisle, and Bryan R. Bzdek

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Latest update: 27 Oct 2025
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Short summary
We measure the surface tension of picoliter-volume droplets containing strong ionic surfactants and cosolutes and compare this to surface tension predictions using two independent surfactant partitioning models. Under high-water-activity conditions, experimental measurements and model predictions show no change when NaCl cosolute is replaced with sea salt. Model predictions show that total surfactant concentrations in the range of tens to hundreds of millimolar are required to lower the surface tension of accumulation-mode aerosol. 
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