Articles | Volume 20, issue 10
https://doi.org/10.5194/acp-20-6055-2020
https://doi.org/10.5194/acp-20-6055-2020
Research article
 | 
25 May 2020
Research article |  | 25 May 2020

Heterogeneous oxidation of amorphous organic aerosol surrogates by O3, NO3, and OH at typical tropospheric temperatures

Jienan Li, Seanna M. Forrester, and Daniel A. Knopf

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Cited articles

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Short summary
Organic aerosol is ubiquitous in the atmosphere and can change its phase state from liquid to solid in response to temperature. Our laboratory measurements demonstrate that the chemical reactivity of typical organic aerosol species with atmospheric oxidants is modulated by the species’ phase state. We find that under temperatures typical of the middle and upper troposphere the chemical lifetime of organic aerosol can be significantly extended due to the reduced reactive uptake of gas oxidants.
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