Short-Wave Near-Infrared Spectrometer for Alcohol Determination and Temperature Correction
Figure 4
(a) Spectra of four alcohol contents at 25°C; the arrows indicate the increase of concentration. (b) the smoothed spectra of (a). (c) Spectra of 25% (v/v) alcohol at four temperatures; the arrows indicate the increase of temperature. (d) Spectra of 75% (v/v) alcohol at four temperatures; the arrow indicates the increase of temperature.