title: Determination of 13C/12C carbon isotope ratio.
abstract: 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).
authors.affiliation: 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.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Zanasi
authors.forename: Davide
authors.initials: D
authors.lastname: Alfano
authors.forename: Carla
authors.initials: C
authors.lastname: Scarabino
authors.forename: Oriana
authors.initials: O
authors.lastname: Motta
authors.forename: Rosario G
authors.initials: RG
authors.lastname: Viglione
authors.forename: Antonio
authors.initials: A
authors.lastname: Proto