Articles | Volume 22, issue 3
Atmos. Chem. Phys., 22, 1793–1809, 2022
https://doi.org/10.5194/acp-22-1793-2022
Atmos. Chem. Phys., 22, 1793–1809, 2022
https://doi.org/10.5194/acp-22-1793-2022
Research article
07 Feb 2022
Research article | 07 Feb 2022

Are reactive oxygen species (ROS) a suitable metric to predict toxicity of carbonaceous aerosol particles?

Zhi-Hui Zhang et al.

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Latest update: 08 Aug 2022
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Short summary
Using a novel setup, we comprehensively characterized the formation of particle-bound reactive oxygen species (ROS) in anthropogenic and biogenic secondary organic aerosols (SOAs). We found that more than 90 % of all ROS components in both SOA types have a short lifetime. Our results also show that photochemical aging promotes particle-bound ROS production and enhances the oxidative potential of the aerosols. We found consistent results between chemical-based and biological-based ROS analyses.
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