Peter R. Griffiths

TL;DR: In this paper, a comparison of spectra from direct-deposition (DD) capillary gas chromatography and supercritical fluid chromatography (SFC)/Fourier transform infrared (FT-IR) measurements of two quinones with C2 symmetry axes and several barbiturates to spectra of condensed phase libraries of the corresponding compounds is reported.

TL;DR: In this article, the number of components in a mixture is estimated using factor analysis or absorbance ratio technique, but the answers given by these techniques are often ambiguous, and the spectral spectrum of each individual component can be obtained using absorbance subtraction routines; however, for this technique to be successful the spectroscopist should have some knowledge of the composition of his sample, and he needs the spectra of at least as many samples of different composition as there are components in the mixture.

TL;DR: In this article, the vapor-phase infrared spectra of mixtures of o-, m-, and p-xylene were analyzed using a partial least squares (PLS) regression.

TL;DR: A simple procedure for evaluation of FT-IR radiometric accuracy, which incorporates the use of calibrated standard reference materials using a wavelength/wavenumber standard reference material developed at the National Institute and Standards and Technology.