Alcohol determination using an acoustic wave sensor.
An acoustic wave methodology was developed to quantify alcohols in aqueous solutions. The frequency at minimum impedance of a bare quartz crystal in contact with ethanol solutions was found to be a suitable parameter to quantify ethanol. Ethanol in several Portuguese white wines was analyzed both by the proposed methodology and by the usual areometric method with no statistically significant differences (alpha = 0.05) in precision or accuracy of the results.
Gomes
M T
MT
Department of Chemistry, University of Aveiro, Portugal. mtgomes@dq.ua.pt
Veríssimo
M I
MI
Oliveira
J A
JA
D004563:Electrochemistry / Q000379:methods; D000431:Ethanol / Q000032:analysis*; D011174:Portugal; D015203:Reproducibility of Results; D014920:Wine / Q000032:analysis*
D000431:Ethanol