title: Analysis of the 13C natural abundance of CO2 gas from sparkling drinks by gas chromatography/combustion/isotope ratio mass spectrometry.
abstract: A simple and rapid method to measure naturally occurring delta(13)C values of headspace CO(2) of sparkling drinks has been set up, using direct injections on a gas chromatograph coupled to an isotope ratio mass spectrometer, through a combustion interface (GC/C/IRMS). We tested the method on CO(2) gas from several origins. No significant isotopic fractionation was observed nor influences by secondary compounds eventually present in the gas phase. Standard deviation for these measurements was found to be <0.1 per thousand.
authors.affiliation: Commission of the European Communities, Joint Research Centre, Institute for Health and Consumer Protection, Physical and Chemical Exposure Unit, TP740 BEVABS/IHCP-JRC, 21027 Ispra, Italy.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Calderone
authors.forename: Norbert
authors.initials: N
authors.lastname: Naulet
authors.forename: Claude
authors.initials: C
authors.lastname: Guillou
authors.forename: Fabiano
authors.initials: F
authors.lastname: Reniero
authors.forename: Ana Isabel Blanch
authors.initials: AI
authors.lastname: Cortes
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis*; D002250:Carbon Radioisotopes / Q000032:analysis / Q000737:chemistry*; D002253:Carbonated Beverages / Q000032:analysis*; D017022:Flow Injection Analysis; D005504:Food Analysis / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*
chemical_list: D002250:Carbon Radioisotopes; D002245:Carbon Dioxide