期刊
TALANTA
卷 160, 期 -, 页码 276-281出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2016.06.053
关键词
Carbon stable isotope ratio; Food; Isotope Ratio Mass Spectrometry (IRMS); Non-dispersive Infrared Spectroscopy (NDIRS); Fourier Transform Infrared Spectroscopy (FTIR)
资金
- Fondi di Ateneo per la Ricerca di Base (FARB) University of Salerno [ORSA149477]
- POR Campania FESR (Campania Region, Italy) [CUP B77/1200013007]
The C-13/C-12 carbon isotope ratio is a chemical parameter with many important applications in several scientific area and the technique of choice currently used for the delta C-13 determination is the isotope ratio mass spectrometry (IRMS). This latter is highly accurate (0.1 parts per thousand) and sensitive (up to 0.01 parts per thousand), but at the same time expensive and complex. The objective of this work was to assess the reliability of FTIR and NDIRS techniques for the measurement of carbon stable isotope ratio of food sample, in comparison to IRMS. IRMS, NDIRS and FTIR were used to analyze samples of food, such as oil, durum, cocoa, pasta and sugar, in order to determine the natural abundance isotopic ratio of carbon in a parallel way. 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. (C) 2016 Elsevier B.V. All rights reserved.
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