The increasing availability of stable isotopes has stimulated the development of methods for the analysis of these materials. Among the most useful of these isotopes is 13C, which has a natural abundance of 1.1%. NMR and mass spectrometry techniques probably furnish the most
sensitive methods of analysis, but dispersive and nondispersive infrared techniques offer promise as the most economical method when sample volume is not critical and where the isotope is present in a simple diatomic molecule. McDowell has discussed the analysis of 13C16O
by dispersive infrared spectroscopy using the fundamental stretching vibration at 4664 nm (2144 cm−1). This paper is concerned with the analysis of 13C16O using the infrared overtone bands around 2410 nm (4145 cm−1).
Beckman Instruments, Inc., Fullerton, California 92634
Publication date: September 1, 1974
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