Articles | Volume 14, issue 3
https://doi.org/10.5194/amt-14-2317-2021
https://doi.org/10.5194/amt-14-2317-2021
Research article
 | 
25 Mar 2021
Research article |  | 25 Mar 2021

Comparability of calibration strategies for measuring mercury concentrations in gas emission sources and the atmosphere

Iris de Krom, Wijnand Bavius, Ruben Ziel, Elizabeth A. McGhee, Richard J. C. Brown, Igor Živković, Jan Gačnik, Vesna Fajon, Jože Kotnik, Milena Horvat, and Hugo Ent

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Cited articles

BIPM, IEC, IFCC, ILAC, ISO, IUPAC, and OIML: Guide to the expression of uncertainty in measurement JCGM 100:2008, GUM 1995 with Minor Corrections (BIPM), ISO, Geneva, Switzerland, 2008. 
Brown, A. S., Brown, R. J. C., Corns, W. T., and Stockwell, P. B.: Establishing SI traceability for measurements of mercury vapour, Analyst, 133, 946–953, https://doi.org/10.1039/B803724H, 2008. 
Brown, A. S., Brown, R. J. C., Dexter, M. A., Corns, W. T., and Stockwell, P. B.: A novel automatic method for the measurement of mercury vapour in ambient air, and comparison of uncertainty with established semi-automatic and manual methods, Anal. Methods, 2, 954–966, https://doi.org/10.1039/C0AY00058B, 2010. 
Brown, R. J. C., Brown, A. S., Corns, W. T., and Stockwell, P. B.: Accurate calibration of mercury vapour indicators for occupational exposure measurements using a dynamic mercury vapour generator, Instrum. Sci. Technol., 36, 611–622, https://doi.org/10.1080/10739140802448309, 2008a. 
Brown, R. J. C., Brown, A. S., Yardley, R. E., Corns, W. T., and Stockwell, P. B.: A practical uncertainty budget for ambient mercury vapour measurement, Atmospheric Environment, 42, 2504-2517, https://doi.org/10.1016/j.atmosenv.2007.12.012, 2008b. 
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Short summary
To demonstrate the robustness and comparability of the novel primary mercury gas standard, the results of comparisons are presented with current calibration methods maintained, using the bell jar in combination with the Dumarey equation or NIST liquid standard reference material. The results show that the primary standard and the NIST reference material are comparable, whereas a difference of −8 % exists between results traceable to the primary standard and the Dumarey equation.