Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 18, issue 23
Articles | Volume 18, issue 23
https://doi.org/10.5194/amt-18-7221-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-18-7221-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 23
Research article
 | 
02 Dec 2025
Research article |  | 02 Dec 2025

High-purity nitrous acid (HONO) generation and quantification using broadband cavity-enhanced absorption spectroscopy (BBCEAS)

Alexis P. Harper, Callum E. Flowerday, Zachary Giauque, Kaitlyn Brewster, Ryan Thalman, and Jaron C. Hansen

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Short summary
In this study, we developed a new way to produce and measure nitrous acid, an important atmospheric gas that can be difficult to synthesize. By carefully controlling temperatures and reaction conditions, we created high-purity (<96 %) samples and showed how they can be stored and released when needed. This advance makes it easier to study how nitrous acid contributes to air pollution and atmospheric interactions, while also improving tools for laboratory experiments and instrument testing.
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