Identification of aromas from alcohols using a Japanese-lacquer-film-coated quartz resonator gas sensor in conjunction with pattern recognition analysis

Transient response curves for exposure to aromas from several kinds of alcohols are observed using a Japanese-lacquer-film-coated quartz resonator gas sensor. The shape of the transient response curves strongly depends on the ethanol concentration of alcohols. The pattern recognition analysis using principal component or neural network analysis is carried out using four parameters which characterize the shape of the transient response curve. The recognition probability using neural network analysis for aromas from alcohols is 100% for 25 trials.