Articles | Volume 12, issue 6
Atmos. Meas. Tech., 12, 3101–3109, 2019
https://doi.org/10.5194/amt-12-3101-2019

Special issue: Advances in cavity-based techniques for measurements of atmospheric...

Atmos. Meas. Tech., 12, 3101–3109, 2019
https://doi.org/10.5194/amt-12-3101-2019

Research article 12 Jun 2019

Research article | 12 Jun 2019

Simultaneous detection of C2H6, CH4, and δ13C-CH4 using optical feedback cavity-enhanced absorption spectroscopy in the mid-infrared region: towards application for dissolved gas measurements

Loic Lechevallier et al.

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Cited articles

Butler, T. J. A., Mellon, D., Kim, J., Litman, J., and Orr-Ewing, A. J.: Optical-feedback cavity ring-down spectroscopy measurements of extinction by aerosol particles, J. Phys. Chem. A, 113, 3963–3972, https://doi.org/10.1021/jp810310b, 2009. 
Chua, E. J., Savidge, W., Short, R. T., Cardenas-valencia, A. M., and Fulweiler, R. W.: A Review of the Emerging Field of Underwater Mass Spectrometry, Front. Mar. Sci., 3, 209, https://doi.org/10.3389/fmars.2016.00209, 2016. 
Claypool, G. E. and Kvenvolden, A. K.: Methane and Other Hydrocarbon gases in Marine Sediment, Annu. Rev. Earth Pl. Sc., 11, 299–327, 1983. 
Dicke, R. H.: The effect of Collisions upon the doppler width of spectral lines, Phys. Rev., 89, 472–473, 1953. 
Eyer, S., Tuzson, B., Popa, M. E., van der Veen, C., Röckmann, T., Rothe, M., Brand, W. A., Fisher, R., Lowry, D., Nisbet, E. G., Brennwald, M. S., Harris, E., Zellweger, C., Emmenegger, L., Fischer, H., and Mohn, J.: Real-time analysis of δ13C- and δD-CH4 in ambient air with laser spectroscopy: method development and first intercomparison results, Atmos. Meas. Tech., 9, 263–280, https://doi.org/10.5194/amt-9-263-2016, 2016. 
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In this work we describe a highly sensitive optical spectrometer for simultaneous measurement of methane, ethane, and the isotopic composition of methane. The coupling of the spectrometer with a dissolved gas extraction system will provide a suitable tool for understanding the origins of the dissolved hydrocarbons and discriminate between the different sources (e.g., biogenic vs. thermogenic).