Title: Determination of Hydrogen, Carbon and Oxygen Isotope Ratios of Ethanol in Water at Millimole Levels
Authors: YAMADA KeitaYOSHIDA NaohiroCALDERONE GIOVANNIGUILLOU CLAUDE
Citation: RAPID COMMUNICATIONS IN MASS SPECTROMETRY vol. 21 p. 1431-1437
Publisher: JOHN WILEY & SONS LTD
Publication Year: 2007
JRC N°: JRC37037
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC37037
Type: Articles in Journals
Abstract: Three stable isotope ratios, D/H, 13C/12C and 18O/16O, are measurable in ethanol, an important organic compound that is used as material for food and beverages, fuel and chemical feedstock, and as a substance related to metabolism. We developed a simple and rapid method of measurement of three isotope ratios of ethanol in water at millimole levels using a gas chromatography - high-temperature conversion or combustion-isotope ratio mass spectrometry (GC-TC/C-IRMS) combined with solid phase microextraction (SPME). Using this method, the delta value for ethanol was determined in 30 min for deltaD and delta13C, and in 75 min for delta18O with precisions of ±9 permille, ±0.3 permille and ±0.7 permille respectively for deltaD, delta13C, and delta18O. An advantage of this process is that it requires no distillation for ethanol purification. The method is useful for small quantities of analyte with low ethanol concentrations, which is expected for environmental and metabolic studies.
JRC Institute:Institute for Health and Consumer Protection

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