Articles | Volume 17, issue 14
https://doi.org/10.5194/amt-17-4227-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-17-4227-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 Jul 2024
Research article |
| 17 Jul 2024
| 17 Jul 2024
An oxidation flow reactor for simulating and accelerating secondary aerosol formation in aerosol liquid water and cloud droplets
Ningjin Xu
Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, CA 92521, USA
College of Engineering – Center for Environmental Research and Technology (CE-CERT), University of California Riverside, Riverside, CA 92507, USA
Chen Le
Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, CA 92521, USA
College of Engineering – Center for Environmental Research and Technology (CE-CERT), University of California Riverside, Riverside, CA 92507, USA
David R. Cocker
Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, CA 92521, USA
College of Engineering – Center for Environmental Research and Technology (CE-CERT), University of California Riverside, Riverside, CA 92507, USA
Kunpeng Chen
Department of Environmental Sciences, University of California Riverside, Riverside, CA 92521, USA
Ying-Hsuan Lin
Department of Environmental Sciences, University of California Riverside, Riverside, CA 92521, USA
Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, CA 92521, USA
College of Engineering – Center for Environmental Research and Technology (CE-CERT), University of California Riverside, Riverside, CA 92507, USA
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Zihan Zhu, Javier González-Rocha, Yifan Ding, Isis Frausto-Vicencio, Sajjan Heerah, Akula Venkatram, Manvendra Dubey, Don Collins, and Francesca M. Hopkins
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Qi Li, Jia Jiang, Isaac K. Afreh, Kelley C. Barsanti, and David R. Cocker III
Atmos. Chem. Phys., 22, 3131–3147, https://doi.org/10.5194/acp-22-3131-2022, https://doi.org/10.5194/acp-22-3131-2022, 2022
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Chamber-derived secondary organic aerosol (SOA) yields from camphene are reported for the first time. The role of peroxy radicals (RO2) was investigated using chemically detailed box models. We observed higher SOA yields (up to 64 %) in the experiments with added NOx than without due to the formation of highly oxygenated organic molecules (HOMs) when
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Understanding the volatility and mixing state of atmospheric aerosols is important for elucidating their formation. Here, the size-resolved volatility of fine particles is characterized using field measurements. On average, the particles are more volatile in the summer. The retrieved mixing state shows that black carbon (BC)-containing particles dominate and contribute 67–77 % toward the total number concentration in the winter, while the non-BC particles accounted for 52–69 % in the summer.
Sophia M. Charan, Yuanlong Huang, Reina S. Buenconsejo, Qi Li, David R. Cocker III, and John H. Seinfeld
Atmos. Chem. Phys., 22, 917–928, https://doi.org/10.5194/acp-22-917-2022, https://doi.org/10.5194/acp-22-917-2022, 2022
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In this study, we investigate the secondary organic aerosol formation potential of decamethylcyclopentasiloxane (D5), which is used as a tracer for volatile chemical products and measured in high concentrations both outdoors and indoors. By performing experiments in different types of reactors, we find that D5’s aerosol formation is highly dependent on OH, and, at low OH concentrations or exposures, D5 forms little aerosol. We also reconcile results from other studies.
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Short summary
A flow-through reactor was developed that exposes known mixtures of gases or ambient air to very high concentrations of the oxidants that are responsible for much of the chemistry that takes place in the atmosphere. Like other reactors of its type, it is primarily used to study the formation of particulate matter from the oxidation of common gases. Unlike other reactors of its type, it can simulate the chemical reactions that occur in liquid water that is present in particles or cloud droplets.
A flow-through reactor was developed that exposes known mixtures of gases or ambient air to very...
