Carbon isotopic analysis of atmospheric methane by isotope-ratio-monitoring gas chromatography-mass spectrometry

Less than 15 min are required for the determination of delta 13CPDB with a precision of 0.2% (1 sigma, single measurement) in 5-mL samples of air containing CH4 at natural levels (1.7 ppm). An analytical system including a sample-introduction unit incorporating a preparative gas chromatograph (GC) c...

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Bibliographic Details

Published in:	Journal of geophysical research Vol. 100; no. D1; p. 1317
Main Authors:	Merritt, D A, Hayes, J M, Des Marais, D J
Format:	Journal Article
Language:	English
Published:	United States 20-01-1995
Subjects:	Atmosphere - analysis Carbon Dioxide Carbon Isotopes Chemistry Techniques, Analytical - instrumentation Chemistry Techniques, Analytical - methods Evaluation Studies as Topic Gas Chromatography-Mass Spectrometry - instrumentation Gas Chromatography-Mass Spectrometry - methods Gases - analysis Methane - analysis NASA Discipline Exobiology Non-NASA Center
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