Flores, E; Viallon, J; Idrees, F; Moussay, P; Wielgosz, R; de Jesus Avila Salas, M; Delgado, J K; Oh, S H; Lee, S; Jung, J; Jozela, M; Ntsasa, N G; Tshilongo, J; Mphamo, T; Worton, D R; Brewer, P; Ward, M; Persijn, S; de Krom, I; van der Veen, A (2023) Pilot study CCQM-P172 – spectroscopic methods for HNO3 value assignment. Metrologia, 60 (1A). 08006

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Abstract

The CCQM-P172 comparison was designed to evaluate the level of compatibility of laboratories' spectroscopic methods for trace gas quantification using nitric acid (HNO3) as a model system. Because it is present in NO2 gas standards as an impurity, HNO3 was chosen as the analyte for study. As primary reference gas mixtures of HNO3/N2 are (generally) unavailable for calibration, traceability for spectroscopic measurements will rely on the use of referenced molecular parameters (such as tabulated in the HITRAN database, acronym for high-resolution transmission molecular absorption database).

Item Type:	Article
Subjects:	Environmental Measurement > Air Quality and Airborne Particulates
Divisions:	Atmospheric Environmental Sciences
Identification number/DOI:	10.1088/0026-1394/60/1A/08006
Last Modified:	23 May 2025 14:54
URI:	https://eprintspublications.npl.co.uk/id/eprint/10173