The Uncertainty Evaluation of Determining the Moisture in Gases by the Method of Cavity Ring Down Spectroscopy

ZHOU Xin; ZHOU Ze-yi

doi:10.3969/j.issn.1000-1158.2012.02.17

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Acta Metrologica Sinica ›› 2012, Vol. 33 ›› Issue (2) : 178-180. DOI: 10.3969/j.issn.1000-1158.2012.02.17

The Uncertainty Evaluation of Determining the Moisture in Gases by the Method of Cavity Ring Down Spectroscopy

ZHOU Xin,ZHOU Ze-yi

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Abstract

A new method for determining the moisture in gases by the cavity ring down spectroscopy is available to measure the concentration between 0.2×10^-9 mol/mol and 20×10^-6 mol/mol.A mathematical model is established for the uncertainty evaluation,and the results of the expanded uncertaunties are in the range of（8～20）×10^-9 mol/mol （k=2, p=95%）.

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Metrology / Cavity ring down spectroscopy / Gas moisture / Uncertainty

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ZHOU Xin,ZHOU Ze-yi. The Uncertainty Evaluation of Determining the Moisture in Gases by the Method of Cavity Ring Down Spectroscopy[J]. Acta Metrologica Sinica. 2012, 33(2): 178-180 https://doi.org/10.3969/j.issn.1000-1158.2012.02.17

References

［1］Brewer P J,MiltonM J T,HarrisP A,et al.International comparability in measurements of trace water vapour［R］.NPL Report AS59, 2011.
［2］Yan W B,Chen Y,Chen H, et al.Development and applications of continuous-wave cavity ring-down spectroscopy［J］.Int J Thermophys,2008, 29(5): 1567-1577.
［3］JCGM100—2008.Guide to the Expression of Uncertainty in Measurement［S］.