Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Original Papers
GC Identification of Organic Compounds Based on Partition Coefficients of Their TMS Derivatives in a Hexane-Acetonitrile System and Retention Indices
Valery A. ISIDOROVUrszula KOTOWSKAVera T. VINOGOROVA
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2005 Volume 21 Issue 12 Pages 1483-1489

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Abstract

This paper reports the experimentally determined and calculated partition coefficients (Kp) in a heterogeneous system consisting of two partially mixing organic solvents for trimethylsilyl derivatives of 119 compounds including phenols, phenolcarboxylic acids, mono- and dicarboxylic acids, and some carbohydrates and polyols. It was demonstrated that a simple model based on the available physico-chemical properties of molecules can be used to accurately predict the hexane-acetonitrile partition coefficients. Phenols, other organic acids, and carbohydrates form complex mixtures in extracts of plant tissues, in various biological fluids, as well as in waste waters. For group identification of these mixture components, it is desirable to use the parameter j which is a combination of Kp and gas chromatographic retention indices: j = kI - log Kp. This approach increases identification reliability in gas chromatographic analysis. The use of the group parameter j in the analysis of nonvolatile organic components of waste waters is reported.

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© 2005 by The Japan Society for Analytical Chemistry
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