Articles | Volume 23, issue 1
https://doi.org/10.5194/acp-23-221-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-221-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Jan 2023
Research article |
| 05 Jan 2023
| 05 Jan 2023
Impact of phase state and non-ideal mixing on equilibration timescales of secondary organic aerosol partitioning
Meredith Schervish
Department of Chemistry, University of California, Irvine, CA 92697, USA
Department of Chemistry, University of California, Irvine, CA 92697, USA
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Viscosity is important because it determines the lifetime, impact, and fate of particulate matter. We collected new data to rigorously test a framework that is used to constrain the phase state in global simulations. We find that the framework is accurate as long as appropriate compound specific inputs are available.
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Short summary
Secondary organic aerosols (SOAs) can exhibit complex non-ideal behavior and adopt an amorphous semisolid state. We simulate condensation of semi-volatile compounds into a phase-separated particle to investigate the effect of non-ideality and particle phase state on the equilibration timescale of SOA partitioning. Our results provide useful insights into the interpretation of experimental observations and the description and treatment of SOA in aerosol models.
Secondary organic aerosols (SOAs) can exhibit complex non-ideal behavior and adopt an amorphous...
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