Articles | Volume 19, issue 23
https://doi.org/10.5194/acp-19-14703-2019
https://doi.org/10.5194/acp-19-14703-2019
Research article
 | 
05 Dec 2019
Research article |  | 05 Dec 2019

Predominance of secondary organic aerosol to particle-bound reactive oxygen species activity in fine ambient aerosol

Jun Zhou, Miriam Elser, Ru-Jin Huang, Manuel Krapf, Roman Fröhlich, Deepika Bhattu, Giulia Stefenelli, Peter Zotter, Emily A. Bruns, Simone M. Pieber, Haiyan Ni, Qiyuan Wang, Yichen Wang, Yaqing Zhou, Chunying Chen, Mao Xiao, Jay G. Slowik, Samuel Brown, Laure-Estelle Cassagnes, Kaspar R. Daellenbach, Thomas Nussbaumer, Marianne Geiser, André S. H. Prévôt, Imad El-Haddad, Junji Cao, Urs Baltensperger, and Josef Dommen

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Predominance of secondary organic aerosol to particle-bound reactive oxygen species activity in fine ambient aerosol J. Zhou and J. Dommen https://doi.org/10.5281/zenodo.3520219

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Short summary
Reactive oxygen species (ROS) are believed to contribute to the adverse health effects of aerosols. We measured particle-bound ROS (PB-ROS) with an online instrument in two distinct environments, i.e., Beijing (China) and Bern (Switzerland). In both cities these exogenic ROS are predominantly related to secondary organic aerosol (SOA). PB-ROS content in SOA from various anthropogenic emission sources tested in the laboratory was comparable to that in the ambient measurements.
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