Articles | Volume 7, issue 7
Atmos. Meas. Tech., 7, 1999–2012, 2014
https://doi.org/10.5194/amt-7-1999-2014
Atmos. Meas. Tech., 7, 1999–2012, 2014
https://doi.org/10.5194/amt-7-1999-2014

Research article 04 Jul 2014

Research article | 04 Jul 2014

Improving accuracy and precision of ice core δD(CH4) analyses using methane pre-pyrolysis and hydrogen post-pyrolysis trapping and subsequent chromatographic separation

M. Bock et al.

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Online technique for isotope and mixing ratios of CH4, N2O, Xe and mixing ratios of organic trace gases on a single ice core sample
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Cited articles

Bergamaschi, P., Schupp, M., and Harris, G. W.: High-precision direct measurements of 13CH4/12CH4 and 12CH3D/12CH4 ratios in atmospheric methane sources by means of a long-path tunable diode laser absorption spectrometer, Appl. Optics, 33, 7704–7716, 1994.
Bergamaschi, P., Bräunlich, M., Marik, T., and Brenninkmeijer, C. A. M.: Measurements of the carbon and hydrogen isotopes of atmospheric methane at Izaña, Tenerife: Seasonal cycles and synoptic-scale variations, J. Geophys. Res., 105, 14531–14546, https://doi.org/10.1029/1999JD901176, 2000.
Bock, M., Schmitt, J., Behrens, M., Möller, L., Schneider, R., Sapart, C., and Fischer, H.: A gas chromatography/pyrolysis/isotope ratio mass spectrometry system for high-precision δD measurements of atmospheric methane extracted from ice cores, Rapid Commun. Mass Sp., 24, 621–633, https://doi.org/10.1002/rcm.4429, 2010a.
Bock, M., Schmitt, J., Möller, L., Spahni, R., Blunier, T., and Fischer, H.: Hydrogen Isotopes Preclude Marine Hydrate CH4 Emissions at the Onset of Dansgaard-Oeschger Events, Science, 328, 1686–1689, 2010b.
Bock, M., Schmitt, J., Beck, J., Schneider, R., and Fischer, H.: Improving accuracy and precision of ice core δD(CH4) analyses using methane pre- and hydrogen post-pyrolysis trapping and subsequent chromatographic separation, Atmos. Meas. Tech. Discuss., 6, 11279–11307, https://doi.org/10.5194/amtd-6-11279-2013, 2013.
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