Articles | Volume 23, issue 22
https://doi.org/10.5194/acp-23-14307-2023
https://doi.org/10.5194/acp-23-14307-2023
Research article
 | 
20 Nov 2023
Research article |  | 20 Nov 2023

Volatile oxidation products and secondary organosiloxane aerosol from D5 + OH at varying OH exposures

Hyun Gu Kang, Yanfang Chen, Yoojin Park, Thomas Berkemeier, and Hwajin Kim

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Short summary
D5 is an emerging anthropogenic pollutant that is ubiquitous in indoor and urban environments, and the OH oxidation of D5 forms secondary organosiloxane aerosol (SOSiA). Application of a kinetic box model that uses a volatility basis set (VBS) showed that consideration of oxidative aging (aging-VBS) predicts SOSiA formation much better than using a standard-VBS model. Ageing-dependent parameterization is needed to accurately model SOSiA to assess the implications of siloxanes for air quality.
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