Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 18
Articles | Volume 25, issue 18
https://doi.org/10.5194/acp-25-10965-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-10965-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 18
Research article
 | 
23 Sep 2025
Research article |  | 23 Sep 2025

New water-soluble, toxic tracers of wood burning identified in fine brown carbon aerosol using a non-target approach

Vinh Nguyen, Bartłomiej Witkowski, and Tomasz Gierczak

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Short summary
This article provides new insights into the molecular composition of fine, light-absorbing organic aerosols emitted by biomass burning. Laboratory-generated aerosol was extracted into water and analyzed with liquid chromatography-mass spectrometry, identifying over 350 new water-soluble wood-burning tracers. This study also examines the toxicities and atmospheric lifetimes, revealing that the newly identified molecules are harmful and can undergo chemical processing in atmospheric hydrometeors.
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