Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 6
Articles | Volume 26, issue 6
https://doi.org/10.5194/acp-26-4479-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-4479-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 6
Research article
 | 
01 Apr 2026
Research article |  | 01 Apr 2026

NH3 converts Criegee intermediates to nitrogenous organics

Xiaoying Li, Long Jia, and Yongfu Xu

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Short summary
Nitrogen-containing organic aerosols can affect health, environment, and climate; however, their formation mechanism is still poorly understood. Based on Orbitrap-MS (mass spectrometer), our study reveals a previously unrecognized atmospheric reaction pathway in which ammonia can efficiently scavenge stable Criegee intermediates. This new reaction produces nitrogen-containing organic compounds with a reactive peroxide bond, which may pose health risks and alter the optical properties of aerosols.
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