Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 16
Articles | Volume 26, issue 16
https://doi.org/10.5194/acp-26-12171-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-12171-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 16
Research article
 | 
27 Aug 2026
Research article |  | 27 Aug 2026

Perchloric acid (HClO4) drives atmospheric new particle formation enhanced by dimethylamine, ammonia and sulfuric acid: mechanisms and implications

Shengming Wang, Ziheng Li, Xiangli Shi, Qingzhu Zhang, and Wenxing Wang

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Short summary
This study examines how perchloric acid (HClO₄) promotes atmospheric new particle formation. Computational simulations reveal that dimethylamine (DMA) greatly enhances this process—far more effectively than ammonia or sulfuric acid, even at substantially lower concentrations. The DMA–HClO₄ interaction thus represents a previously overlooked source of marine aerosols, offering new insight into polar climate change.
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