RESOLUTION OF MULTICOMPONENT MIXTURE SPECTRA IN MIDINFRARED SPECTROSCOPY USING SPHERICAL PROJECTION FACTOR-ANALYSIS - APPLICATION TO REAL DATA INCLUDING A 6-COMPONENT MIXTURE SET

Spherical projection factor analysis is a self-modelling curve resolut ion method used for the deconvolution of a set of mixture spectra into the pure component spectral and concentration profiles. A modificatio n of the previously proposed method is described, consisting of four s teps, namely principal components analysis, spherical projection inclu ding wavenumber weighting, location of composition one points and regr ession of composition one points, The method was applied to real and s imulated mixture sets, including one which contained six components.