Articles | Volume 13, issue 5
https://doi.org/10.5194/amt-13-2425-2020
https://doi.org/10.5194/amt-13-2425-2020
Research article
 | 
15 May 2020
Research article |  | 15 May 2020

Single-photon laser-induced fluorescence detection of nitric oxide at sub-parts-per-trillion mixing ratios

Andrew W. Rollins, Pamela S. Rickly, Ru-Shan Gao, Thomas B. Ryerson, Steven S. Brown, Jeff Peischl, and Ilann Bourgeois

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Latest update: 20 Jan 2025
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Short summary
Nitric oxide (NO) is a key atmospheric constituent controlling atmospheric oxidation chemistry and tropospheric ozone formation. Existing instrumentation capable of quantifying NO at very low mixing ratios is uncommon and typically relies on chemiluminescence. We describe and demonstrate a new laser-based technique (LIF) with significant practical and technical advantages to CL. This technique is expected to allow for advances in understanding of atmospheric radical chemistry.