Quantification of CO2 in wines with piezoelectric crystals coated with tetramethylammonium fluoride and comparison with other methodsM.T.S.R. Gomes, T.A.P. Rocha, A.C. Duarte and J.A.B.P. Oliveira
Department of Chemistry, University of Aveiro, 3810 Aveiro, Portugal
A quartz crystal coated with tetramethylammonium fluoride tetrahydrate is used for the quantification of carbon dioxide. The performance of the method was compared with another method using crystals coated with N, N, N', N'-tetrakis (2-hydroxyethyl) ethylenediamine, and with a titrimetric method. The proposed method is faster and more precise than the titrimetric method, and much faster (around 15 times) than the other method using piezoelectric crystals.
Key words: Quartz crystal microbalance / piezoelectric crystals / wine / carbon dioxide.
© EDP Sciences, Wiley-VCH 1998