International comparison of NO₂ in nitrogen standards (BIPM.QM-K6)

The BIPM.QM-K6 is an on-demand comparison for gaseous nitrogen dioxide (NO₂) in nitrogen contained in high pressure cylinders.

The Key Comparison BIPM.QM-K6 is aimed at underpinning the capabilities of the participants to value assign the amount fraction of nitrogen dioxide (NO₂) in nitrogen standards at a nominal amount fraction of 10 μmol/mol, with a method ensuring traceability of the measurements to the SI and taking into account the stability of the gas standards submitted for the comparison.

The comparison is run as a series of bilateral comparisons between each participant and the BIPM. The facility maintained by the BIPM provides the Key Comparison Reference Value (KCRV) in each case and quantifies NO₂ amount fractions in nitrogen samples via the dynamic nitrogen dioxide primary gas mixtures obtained from the BIPM Nitrogen Dioxide (NO₂) Primary Facility.

The BIPM facility’s performance has been validated during the CCQM-K74 [1], CCQM K74.2018 [2] and described in detail in a publications [3-5].

The comparison protocol and associated forms can be downloaded from this page. Completed registration forms should be sent to the comparison coordinator, Dr. Edgar Flores (BIPM).

[1] E. Flores, F. Idrees, P. Moussay, J. Viallon, R. Wielgosz, T. Fernandez, S. Ramirez, A. Rojo, U. Shinji, J. Walden, M. Sega, O. Sang-Hyub, T. Mace, C. Couret, H. Qiao, D. Smeulders, F. R. Guenther, W. J. Thorn III, J. Tshilongo, N. G. Ntsasa, V. Stovcik, M. Valkova, L. Konopelko, E. Gromova, G. Nieuwenkamp, R. M. Wessel, M. Milton, A. Harling, G. Vargha, D. Tuma, A. Kohl and G. Schulz, Metrologia, 2012, 49, Tech. Suppl., 08005.

[2] E. Flores, J. Viallon, F. Idrees, P. Moussay, R. Wielgosz, U. Shinji, D. Cieciora, F. Rolle, M. Sega, O. Sang-Hyub, T. Macé, C. Sutour, C. Pascale, T. Zhang, D. Wang, H. Guo, Q. Han, D. Smeulders, M. Jozela, N. G. Ntsasa, J. Tshilongo, T. Mphamo, S. V. Aswegen, D. Worton, P. Brewer, M. Valkova, T. Tarhan, O. Efremova, L. Konopelko, I. d. Krom, S. Persijn and A. v. d. Veen, Metrologia, 2021, 58, 08018.

[3] E. Flores, F. Idrees, P. Moussay, J. Viallon and R. Wielgosz, Anal. Chem., 2012, 84, 10283-10290.

[4] E. Flores, J. Viallon, P. Moussay and R. I. Wielgosz, Appl. Spectrosc., 2013, 67, 1171-1178.

[5] E. Flores, J. Viallon, F. Idrees, P. Moussay, R. Wielgosz, M. d. Jesús Ávila Salas, J. K. Delgado, S.-H. Oh, S. Lee, J. Jung, M. Jozela, N. G. Ntsasa, J. Tshilongo, T. Mphamo, D. R. Worton, P. Brewer, M. Ward, S. Persijn, I. d. Krom and A. v. d. Veen, Metrologia, 2023, 60, 08006.