Sample–Sample Correlation Asynchronous Spectroscopic Method Coupled with Multivariate Curve Resolution-Alternating Least Squares To Analyze Challenging Bilinear Data

An approach to construct a secondary asynchronous spectrum via sample–sample correlation (SASS) is proposed to analyze bilinear data from hyphenated spectroscopic experiments. In SASS, bilinear data is used to construct a series of two-dimensional (2D) sample–sample correlation spectra. Then a vertical slice is extracted from each 2D sample–sample correlation spectrum so that a secondary 2D asynchronous spectrum is constructed via these slices....