A capillary absorption spectrometer for stable carbon isotope ratio (<sup>13</sup>C/<sup>12</sup>C)

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A capillary absorption spectrometer for stable carbon isotope ratio (¹³C/¹²C) analysis in very small samples

J. F. Kelly, R. L. Sams, T. A. Blake, M. Newburn, J. Moran, M. L. Alexander, and H. Kreuzer

Using tunable laser absorption spectroscopy for high throughput stable isotope probing is now a recognized technique to accurately and quickly analyze the isotopic composition of small-molecule gaseous samples. The authors detail a capillary absorption spectrometer (CAS) suitable for IR laser isotope analysis of small CO₂ samples.

Rev. Sci. Instrum. 83, 023101 (2012)

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