Articles | Volume 25, issue 21
https://doi.org/10.5194/acp-25-14301-2025
https://doi.org/10.5194/acp-25-14301-2025
Research article
 | 
03 Nov 2025
Research article |  | 03 Nov 2025

Surface tension and hygroscopicity analysis of aerosols containing organosulfate surfactants

Vahid Shahabadi, Cassandra Lefort, Hoi Tang Law, Man Nin Chan, and Thomas C. Preston

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Cited articles

Bain, A.: Recent advances in experimental techniques for investigating aerosol surface tension, Aerosol Sci. Technol., 58, 1213–1236, https://doi.org/10.1080/02786826.2024.2373907, 2024. a
Bain, A., Chan, M. N., and Bzdek, B. R.: Physical properties of short chain aqueous organosulfate aerosol, Environ. Sci.: Atmos., 3, 1365–1373, https://doi.org/10.1039/D3EA00088E, 2023a. a, b, c, d
Bain, A., Ghosh, K., Prisle, N. L., and Bzdek, B. R.: Surface-area-to-volume ratio determines surface tensions in microscopic, surfactant-containing droplets, ACS Cent. Sci., 9, 2076–2083, https://doi.org/10.1021/acscentsci.3c00998, 2023b. a, b, c
Berry, J. D., Neeson, M. J., Dagastine, R. R., Chan, D. Y., and Tabor, R. F.: Measurement of surface and interfacial tension using pendant drop tensiometry, J. Colloid Interface Sci., 454, 226–237, https://doi.org/10.1016/j.jcis.2015.05.012, 2015. a, b
Bramblett, R. L. and Frossard, A. A.: Constraining the effect of surfactants on the hygroscopic growth of model sea spray aerosol particles, J. Phys. Chem. A, 126, 8695–8710, https://doi.org/10.1021/acs.jpca.2c04539, 2022. a
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This research explores how organosulfate surfactants affect aerosol particles and their response to changes in relative humidity in the atmosphere. Using optical trapping and strong electric fields to investigate single particles, it is found that these surfactants can significantly lower surface tension, even in very small amounts. These findings are important for understanding how such particles influence cloud formation and properties like brightness.
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