The intra-laboratory study of EIM-IRMS® (Ethanol Isotope Measurement–Isotope Ratio Mass Spectrometry) method performance with CS-qNMR (Cumulative Screening–quantitative NMR)

In our earlier publications we proposed the possibility of using new EIM–IRMS ® instrumental technique and analytical parameter δD n wine ethanol, which represents δ 2 H value non-exchangeable hydrogen stable isotope ratio in to improve detection illegal production practices such as addition sugar and/or water grape must prior alcoholic fermentation. This article shows a comparative performance study between EIM-IRMS CS-qNMR methods order evaluate potential demonstrate precision two isotopic concepts their degree practices. Three batches laboratory samples were prepared from three different types grapes ( N =24 samples). Sample results obtained both are compared statistical data processing was carried out. Based on method detected 11 out 21 previously adulterated success rate 52.4% (beet sugar, or beet syrup additions). addition, wines Republic Serbia (90 samples) examined well appropriate equipment confirm authenticity.