Articles | Volume 15, issue 9
Atmos. Meas. Tech., 15, 2703–2718, 2022
https://doi.org/10.5194/amt-15-2703-2022
Atmos. Meas. Tech., 15, 2703–2718, 2022
https://doi.org/10.5194/amt-15-2703-2022
Research article
05 May 2022
Research article | 05 May 2022

Air pollution monitoring: development of ammonia (NH3) dynamic reference gas mixtures at nanomoles per mole levels to improve the lack of traceability of measurements

Tatiana Macé et al.

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Short summary
LNE developed, with the company 2M PROCESS, a gas reference generator to dynamically generate NH3 reference gas mixtures in the air at very low fractions between 1 and 400 nmol/mol. The procedure defined by LNE for calibrating NH3 analyzers used for monitoring air quality guarantees relative expanded uncertainties lower than 2 % for this measurement range. The results of a comparison organized between METAS and LNE allowed the validation of LNE's reference generator and calibration procedure.