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FP5

The certification of the carbon-13 and deuterium isotopic ratio content and the alcoholic grade of ethanol from wine - BCR-656 (96% vol); BCR-657; BCR-658 (7% vol), BCR-659 (12% vol); BCR-660 (12% vol)

Funded under: FP5-GROWTH

Abstract

Full title:

The certification of the carbon-13 and deuterium isotopic ratio content and the alcoholic grade of ethanol from wine - BCR-656 (96% vol); the carbon-13 isotopic ratio content of sugar - BCR-657; the oxygen-18 isotopic ratio content of water from wine - BCR-658 (7% vol), BCR-659 (12% vol); the carbon-13 and deuterium isotopic ratio content and the alcoholic grade of ethanol from wine - BCR-660 (12% vol).

This report describes the preparation of five reference materials, BCR-656 - 660, including the homogeneity and stability testing and analytical measurements required for the certification of each parameter. The reference materials consist of two �synthetic� wines, one at 7% vol. (BCR-658) and one at 12% vol. (BCR-659), that are water - ethanol mixtures with added chemicals to mimic the composition of wine; a water - ethanol solution at 12% vol. (BCR-660); pure ethanol at 96% (BCR-656) and a crystallised sugar (BCR-657). These materials have been certified on the basis of measurements. The different parameters certified for each reference material shown in the table below are method-dependent quantities for which the specific methods used have been fully validated and described in written standards.

The applied procedure for the isotopic analysis of wine by {2}H-NMR is described in European legislation EEC/2676/90. The determination of {13}C/{12}C and {18}O/{16}O isotopic ratios by IRMS are CEN methods (CEN/TC164 N108 and N109). The latter has also been adopted in EC legislation as EEC/822/97 and the former as an OIV Resolution, prior to adoption in EC legislation.

Additional information

Authors: LEES M, Eurofins Scientific, Nantes (FR);REMAUD G, Eurofins Scientific, Nantes (FR);GUILLOU C, European Commission, Joint Research Centre, Institute of Health and Consumer Protection, Ispra (IT)
Bibliographic Reference: European Commission, DG Research, 2001. EUR 20064 EN, pp.94. (BCR Information series) Free of charge
Availability: EUR-OP reference: KI-NA-20064-EN-C Available from: Documentation Service of DG Research Fax: +32 2 295 8220 E-mail: research@ec.europa.eu
ISBN: ISBN: 92-894-3005-2
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