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Determination of 13 C/ 12 C Carbon Isotope Ratio

2006; American Chemical Society; Volume: 78; Issue: 9 Linguagem: Inglês

10.1021/ac0517038

1520-6882

Riccardo Zanasi, Davide Alfano, Carla Scarabino, Oriana Motta, Rosario G. Viglione, Antonio Proto,

Nuclear Physics and Applications

Isotopomers 12CO2 and 13CO2 absorbed into polystyrene films provide narrow, sharp, and well-resolved IR absorption bands for the nu3 antisymmetric stretching mode. This is exploited to set up an inexpensive FT-IR-based method for the measurement of the carbon isotope ratio. Accuracy of 2.5 per thousand delta13C units is readily achieved already at a low resolution of 2 cm(-1).