A Comparison of Methods Used for the Reconstruction of GC/FT-IR Chromatograms

Abstract

Various methods are described for the reconstruction of GC/ IR chromatograms from single scan interferometric data. The methods are compared on the basis of signal-to-noise estimate calculations and on the basis of estimates of the total number of computations required per interferogram processed. Some improvements over previously described methods have been devised. It has been concluded that the use of an improved form of the Gram-Schmidt orthogonalization reconstruction or of a Euclidean distance reconstruction results in optimal signal-to-noise with respect to computation time required.