Articles | Volume 26, issue 10
https://doi.org/10.5194/acp-26-7311-2026
https://doi.org/10.5194/acp-26-7311-2026
Research article
 | 
27 May 2026
Research article |  | 27 May 2026

Highly viscous phase behavior of organic-rich urban PM2.5

Atta Ullah, Ji Yi Lee, Zhijun Wu, Kyoung-Soon Jang, and Mijung Song

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Cited articles

An, Y., Xu, J., Feng, L., Zhang, X., Liu, Y., Kang, S., Jiang, B., and Liao, Y.: Molecular characterization of organic aerosol in the Himalayas: insight from ultra-high-resolution mass spectrometry, Atmos. Chem. Phys., 19, 1115–1128, https://doi.org/10.5194/acp-19-1115-2019, 2019. 
Baboomian, V. J., Crescenzo, G. V., Huang, Y., Mahrt, F., Shiraiwa, M., Bertram, A. K., and Nizkorodov, S. A.: Sunlight can convert atmospheric aerosols into a glassy solid state and modify their environmental impacts, P. Natl. Acad. Sci. USA, 119, e2208121119, https://doi.org/10.1073/pnas.2208121119, 2022. 
Bateman, A. P., Gong, Z., Liu, P., Sato, B., Cirino, G., Zhang, Y., Artaxo, P., Bertram, A. K., Manzi, A. O., and Rizzo, L. V.: Sub-micrometre particulate matter is primarily in liquid form over Amazon rainforest, Nat. Geosci., 9, 34–37, https://doi.org/10.1038/ngeo2599, 2016. 
Baudry, J., Charlaix, E., Tonck, A., and Mazuyer, D.: Experimental Evidence for a Large Slip Effect at a Nonwetting Fluid-Solid Interface, Langmuir, 17, 5232–5236, https://doi.org/10.1021/la0009994, 2001. 
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This study examines how very small airborne particles from ambient air change their physical state under everyday environmental conditions. We show that these particles can exist in semi-solid or solid forms depending on their chemical composition and humidity. These changes affect how air pollutants evolve, helping improve understanding of air quality and climate impacts.

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