Abstract
Factor analysis and other matrix manipulation techniques are applied to some data arrays obtained by successive scanning in two chromatographic-spectrometric systems: high-performance liquid chromatography—ultraviolet (HPLC—UV) and gas chromatography—mass spectrometry (GC—MS), the former containing both real and simulated data and the latter simulated data only. In all multi-component cases considered, the substances are assigned identical retention behaviour, or have very nearly the same experimental retention times. In the HPLC system, the method is a generalization of the absorbance-ratio technique for the determination of peak purity where no choice of suitable wavelengths need be made. Factor analysis reveals the number of hidden components and, in a three-component GC—MS example, a computer programme (UNRAVL) is employed to extract the pure component mass spectra.
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