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Free keywords:
Gc-pyrolysis-irms
Gc-combustion-irms
Delta-o-18 values
Delta-c-13 values
Vanillin
C-13 analysis
O-18 analysis
Multi-element analysis
Stable-isotope-ratio
Authenticity control
Essential oils
Flavors
Wine
Food science/nutrition
Abstract:
The on-line coupling of gas chromatography and isotope ratio mass spectrometry via a pyrolysis interface (GC-pyrolysis-IRMS, GC-P-IRMS) allows the simultaneous determination of delta(13)C and delta(18)O values for organic compounds. On the basis of illustrative investigations of vanillin from different origins, the scope and limitations of the new method are discussed. [References: 18]