A caparison of the quantitative analysis of simple alcohol/ether sixtures using Principal Component Regression and Partial Least Squares analysis is reported and shows the latter method is lore suitable for analysis.
R. P. Durnan,
D. J. Wood,
"Quantitative ITIR Analysis Using Aultivariate Techniques", Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); doi: 10.1117/12.969533; https://doi.org/10.1117/12.969533