Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 5
Articles | Volume 25, issue 5
https://doi.org/10.5194/acp-25-2829-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-2829-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 5
Research article
 | 
07 Mar 2025
Research article |  | 07 Mar 2025

A novel formation mechanism of sulfamic acid and its enhancing effect on methanesulfonic acid–methylamine aerosol particle formation in agriculture-developed and coastal industrial areas

Hui Wang, Shuqin Wei, Jihuan Yang, Yanlong Yang, Rongrong Li, Rui Wang, Chongqin Zhu, Tianlei Zhang, and Changming Zhang

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Short summary
In the gaseous reaction, the activation energy for the hydrolysis of HNSO2 catalyzed by MSA was only 0.8 kcal mol−1. Atmospheric Cluster Dynamic Code kinetic simulations disclosed that sulfamic acid markedly enhances the assembly of a methanesulfonic acid–methylamine-based cluster. At the air–water interface, the NH2SO3− and H3O+ ion formation mechanism and the proton exchange mechanism were observed.
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