Abstract: A new method for separating the IR spectra based on the Independent Component Analysis(ICA) is presented. The main advantage of this method is that it can be used to separate the spectra of the independent components from the mixed spectra. The separation is a blind source separation,since the independent components in the mixtures was unknown. ICA was used to process the mixed system of {n-hexyl} alcohol,acetone and n-butyl alcohol in this study. We also discussed the effect of various preprocessing methods on the result of ICA and developed the ICA algorithm by adding PCA in front of ICA.

Key words: Independent Component Analysis, ICA, IR, Application