Potential function, Fourier component analysis

Soon this concept was connected (234) with the magnitude of the Kj constant in a Fourier component analysis of internal rotation potential functions in molecules exhibiting the anomeric effect (see Section III.B.2). It was also used to account for bond lengths in methanediol (8) (235) and methoxymethanol (49) (244) (p. 196), but the authors claimed (235) that the shortening of the C—O bonds in the ap, ap conformers of 8 cannot be explained by the interaction pictured in Figure 26a. 

An integrated GC/IR/MS instrument is a powerful tool for rapid identification of thermally generated aroma compounds. Fourier transform infrared spectroscopy (GC/IR) provides a complementary technique to mass spectrometry (MS) for the characterization of volatile flavor components in complex mixtures. Recent improvements in GC/IR instruments have made it possible to construct an integrated GC/IR/HS system in which the sensitivity of the two spectroscopic detectors is roughly equal. The combined system offers direct correlation of IR and MS chromatograms, functional group analysis, substantial time savings, and the potential for an expert systems approach to identification of flavor components. Performance of the technique is illustrated with applications to the analysis of volatile flavor components in charbroiled chicken. 

---