Articles | Volume 19, issue 19
Atmos. Chem. Phys., 19, 12569–12585, 2019
https://doi.org/10.5194/acp-19-12569-2019

Special issue: Multiphase chemistry of secondary aerosol formation under...

Atmos. Chem. Phys., 19, 12569–12585, 2019
https://doi.org/10.5194/acp-19-12569-2019
Research article
09 Oct 2019
Research article | 09 Oct 2019

Enhanced heterogeneous uptake of sulfur dioxide on mineral particles through modification of iron speciation during simulated cloud processing

Zhenzhen Wang et al.

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Latest update: 06 Dec 2022
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Short summary
This study confirmed that SO2 uptake on mineral particles could be greatly enhanced during cloud processing. The large pH fluctuations between the cloud-aerosol modes could significantly modify the microphysical properties of particles, and triggered the formation of reactive Fe particles to accelerate sulfate formation via a self-amplifying process. Results of this study could partly explain the missing source of sulfate and improve agreement between models and field observations.
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