The comparison of a metal oxide based electronic nose, gas chromatograph, and a mass spectrometer based chemical sensor

Kevin L. Goodner, Carlos A. Margaria, Elizabeth A. Baldwin, Vanessa R. Kinton


A mass spectrometer based chemical sensor system is compared to a metal oxide semiconductor (MOS) system and a gas chromatograph for differentiating not from concentrate orange juices. Five not from concentrate and one from concentrate juices were analyzed. The separation of the different classes were similar for the MOS and gas chromatograph systems. The mass spectrometer based unit appears to have superior class separation based on preliminary results. Each system has advantages and disadvantages and these will be discussed along with the multivariate statistics used to achieve the separation.


multivariate; statistics; pca; dfa; anova; ms; gc

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283