Determination of 13C/12C carbon isotope ratio.
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).
Zanasi
Riccardo
R
Department of Chemistry, via S. Allende 84081 Baronissi (SA), and Department of Educational Science, via P. Don Melillo 84084 Fisciano (SA), University of Salerno, Salerno, Italy.
Alfano
Davide
D
Scarabino
Carla
C
Motta
Oriana
O
Viglione
Rosario G
RG
Proto
Antonio
A