Articles | Volume 19, issue 6
https://doi.org/10.5194/acp-19-4061-2019
https://doi.org/10.5194/acp-19-4061-2019
Research article
 | 
02 Apr 2019
Research article |  | 02 Apr 2019

Insights into the O : C-dependent mechanisms controlling the evaporation of α-pinene secondary organic aerosol particles

Angela Buchholz, Andrew T. Lambe, Arttu Ylisirniö, Zijun Li, Olli-Pekka Tikkanen, Celia Faiola, Eetu Kari, Liqing Hao, Olli Luoma, Wei Huang, Claudia Mohr, Douglas R. Worsnop, Sergey A. Nizkorodov, Taina Yli-Juuti, Siegfried Schobesberger, and Annele Virtanen

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Latest update: 28 Mar 2024
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Short summary
We studied the evaporation of α-pinene secondary organic aerosol particles in clean air to derive their volatility from the observed size changes. We found that the particles became more resilient to evaporation with increased oxidative age, possibly increasing their lifetime in the atmosphere. Also, increased relative humidity increased the particle evaporation. Mass spectrometry measurements of the particles at different stages of evaporation revealed some water-induced composition changes.
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