Figure 1.
Histograms showing the response patterns of a 13-detector array of carbon black-polymer detectors exposed in air to methanol at 11 torr, 1-butanol at 0.57 torr, and 1-octanol at 5.8 × 10−3 torr (a) and n-pentane at 46 torr, n-nonane at 0.37 torr, and n-tetradecane at 8.5 × 10−4 torr (b). The odorant partial pressures correspond to 10% of their vapor pressures in ambient air. Each histogram bar represents the average of more than six exposures of a single detector to a single odorant for 5 min. The error bars represent one SD in each sensor’s responses. The polymers in detectors 1–13 were poly(4-vinyl phenol), poly(α-methyl styrene), poly(vinyl acetate), poly(sulfone), poly(caprolactone), poly(ethylene-co-vinyl acetate) (82% ethylene), poly(ethylene oxide), poly(ethylene), poly(butadiene), poly(vinylidene fluoride), poly(n-butyl methacrylate), poly(epichlorohydrin), and poly(ethylene glycol).