The 13C/12C carbon isotope ratio is a chemical parameter with many important applications in several scientific areas and the technique of choice currently used is the isotope ratio mass spectrometry (IRMS). This latter is highly accurate (0.1‰) and sensitive (up to 0.01‰), but equally expensive and complex. The objective of this work was to assess the agreement and the reliability of FTIR and NDIRS techniques for the measurement of carbon stable isotope ratio of food sample, in comparison to IRMS. The natural abundance isotopic ratio of carbon was determined on samples of oil, durum, cocoa, pasta and sugar analyzing the samples in parallel by means of IRMS, NDIRS and FTIR. The results were comparable showing a close relationship among the three techniques. The main advantage in using FTIR and NDIRS is related to their cheapness and easy-to-operate in comparison to IRMS.
FTIR and NDIR spectroscopies as valuable alternatives to IRMS spectrometry for the δ13C analysis of food
PIRONTI, CONCETTA;PROTO, Antonio
;CUCCINIELLO, RAFFAELE;ZARRELLA, ILARIA;MOTTA, ORIANA
2016-01-01
Abstract
The 13C/12C carbon isotope ratio is a chemical parameter with many important applications in several scientific areas and the technique of choice currently used is the isotope ratio mass spectrometry (IRMS). This latter is highly accurate (0.1‰) and sensitive (up to 0.01‰), but equally expensive and complex. The objective of this work was to assess the agreement and the reliability of FTIR and NDIRS techniques for the measurement of carbon stable isotope ratio of food sample, in comparison to IRMS. The natural abundance isotopic ratio of carbon was determined on samples of oil, durum, cocoa, pasta and sugar analyzing the samples in parallel by means of IRMS, NDIRS and FTIR. The results were comparable showing a close relationship among the three techniques. The main advantage in using FTIR and NDIRS is related to their cheapness and easy-to-operate in comparison to IRMS.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
