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International Journal of Spectroscopy
Volume 2011 (2011), Article ID 568913, 12 pages
Research Article

Molecular Laser Spectroscopy as a Tool for Gas Analysis Applications

1Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
2Floralis, Filiale de l'Université Joseph Fourier, Grenoble, 6 allée de Bethléem, 38610 Gières, France
33LIPhy-Laboratory of Interdisciplinary Physics (formerly LSP), CNRS Unité Mixte de Recherche 5588, 140 rue de la Physique, Batiment E45 Université J. Fourier de Grenoble 38402 St Martin d'Hères, France

Received 25 January 2011; Accepted 28 March 2011

Academic Editor: Veronica Vaida

Copyright © 2011 Javis Anyangwe Nwaboh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We have used the traceable infrared laser spectrometric amount fraction measurement (TILSAM) method to perform absolute concentration measurements of molecular species using three laser spectroscopic techniques. We report results performed by tunable diode laser absorption spectroscopy (TDLAS), quantum cascade laser absorption spectroscopy (QCLAS), and cavity ring down spectroscopy (CRDS), all based on the TILSAM methodology. The measured results of the different spectroscopic techniques are in agreement with respective gravimetric values, showing that the TILSAM method is feasible with all different techniques. We emphasize the data quality objectives given by traceability issues and uncertainty analyses.