Novel Approaches to Spectrophotometric Analyzing the Unseparated Mixtures of Organic Substances
V. I. VERSHININ
Dostoevsky Omsk State University, Pr. Mira 55A, Omsk 644077 (Russia)
E-mail: vyvershinin@yandex.ru
Keywords: analysis of organic substances, analysis of unseparated mixtures, molecular absorption spectrometry, inter-reference overlapping, non-additivity, integrated parameters
Pages: 1–12
Abstract
We discuss the tasks and methodological problems of molecular absorption spectrometry as a method for the analysis of unseparated mixtures of organic compounds (petroleum products, pharmaceuticals, and others), which method in some cases can successfully compete with chromatography. Using the chemometric algorithms, in particular the method of projection to latent structures, allows successfully solving three major problems: to eliminate the influence of inter–reference spectral overlapping, to take into account a non-additive character of absorption, to level the detection sensitivity with respect to similar analytes. A brief review of relevant studies carried out within recent years in the Omsk State University is reported.
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