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In this paper, 17 commercial Chinese vinegars, acetic acid and 5% diluted acetic acid were analyzed by an electronic nose containing nine nano ZnO thick film gas sensors, which are doped by 5wt.% and 10wt.% TiO 2 , 5 and 10wt.% MnO 2 , 1wt.% V 2 O 5 , 5wt.% Bi 2 O 3 , 0.6 and 2.4wt.% Ag, and 5wt.% W, respectively. Principal component analysis (PCA) and...
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