Articles | Volume 11, issue 7
Atmos. Meas. Tech., 11, 4361–4372, 2018
https://doi.org/10.5194/amt-11-4361-2018
Atmos. Meas. Tech., 11, 4361–4372, 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 et al.

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Latest update: 26 Feb 2021
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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.