Articles | Volume 11, issue 7
https://doi.org/10.5194/amt-11-4361-2018
https://doi.org/10.5194/amt-11-4361-2018
Research article
 | 
24 Jul 2018
Research article |  | 24 Jul 2018

Determining the link between hygroscopicity and composition for semi-volatile aerosol species

Joel Alroe, Luke T. Cravigan, Marc D. Mallet, Zoran D. Ristovski, Branka Miljevic, Chiemeriwo G. Osuagwu, and Graham R. Johnson

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Latest update: 23 Nov 2024
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Short summary
This study describes a new volatility-based method to directly examine the composition and corresponding hygroscopic contribution of mixed aerosol components. Measurements of chamber-generated secondary organic aerosol and coastal marine aerosol demonstrated effective separation of both internal and external mixtures. In each case, the findings enabled composition-based models to reliably reproduce observed particle hygroscopicities.