Abstract
Salamin, P.A., Cornelis, Y. and Bartels, H., 1988. Identification of chemical substances by their near-infrared spectra. Chemometrics and Intelligent Laboratory Systems, 3: 329–333. Near-infrared spectra show a large variability due to physical parameters such as particle size. This makes the identification of chemical substances by spectral comparison difficult. This article reviews an earlier method of identification of chemical substances by near-infrared spectra based on the Mahalanobis distance and introduces a new method based on the multiplicative scatter correction. This new method can to a great extent eliminate the spectral variation due to physical parameters and allows a plain comparison of two complete spectra.
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