Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 10
Articles | Volume 19, issue 10
https://doi.org/10.5194/amt-19-3445-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-3445-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 10
Research article
 | 
26 May 2026
Research article |  | 26 May 2026

Particle nitrate measurement using a thermal-dissociation, cavity-ringdown-spectrometer with gas-phase denuder (D-TD-CRDS)

Patrick Dewald, Tobias Seubert, Laura Wüst, Jan Schuladen, Frank Drewnick, Friederike Fachinger, Thorsten Hoffmann, and John N. Crowley

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Short summary
We have developed and tested an instrument that quantitatively detects particulate nitrate. Gas-phase reactive nitrogen species are denuded using an active-carbon surface and particle nitrate is converted to NO2, which is detected using cavity-ringdown-spectroscopy. Key to accurate measurement of particulate nitrate is drying of the sampled air. Excellent agreement with an aerosol-mass-spectrometer indicates that the instrument detects both organic and inorganic nitrate particle mass accurately.
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