Articles | Volume 21, issue 17
Atmos. Chem. Phys., 21, 13269–13286, 2021
https://doi.org/10.5194/acp-21-13269-2021
Atmos. Chem. Phys., 21, 13269–13286, 2021
https://doi.org/10.5194/acp-21-13269-2021

Research article 07 Sep 2021

Research article | 07 Sep 2021

Ammonium nitrate promotes sulfate formation through uptake kinetic regime

Yongchun Liu et al.

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Latest update: 17 Oct 2021
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Short summary
The mechanisms and kinetics of particulate sulfate formation in the atmosphere are still open questions although they have been extensively discussed. We found that uptake of SO2 is the rate-determining step for the conversion of SO2 to particulate sulfate. NH4NO3 plays an important role in AWC, the phase state of aerosol particles, and subsequently the uptake kinetics of SO2 under high-RH conditions. This work is a good example of the feedback between aerosol physics and aerosol chemistry.
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