Abstract
The gas-chromatographic retention of a series of fluoroalkylarenes on the standard nonpolar polydimethylsiloxane stationary phase OV-101 was characterized, and the retention indices of these compounds were determined. It was found that large negative values of the homological increments of these constants can serve as a sign of fluorine derivatives that contain no less than three fluorine atoms per molecule. The retention indices on polar inorganic sorbents, the silica gels Silipor 75 and Silipor 600, were chosen as the second chromatographic parameter. On these sorbents (unlike partition separation), the nonadditivity effect of the retention indices of polyfunctional organic compounds with respect to their simpler structural analogs was found for the first time. It was found that a mutual correlation between indices for this combination of a phase and a sorbent was lower than that for the combinations of phases with different polarities; this fact is responsible for the higher information content of this combination for the identification of compounds from this class.
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Original Russian Text © I.G. Zenkevich, A.A. Makarov, E.V. Eliseenkov, 2007, published in Zhurnal Analiticheskoi Khimii, 2007, Vol. 62, No. 7, pp. 724–732.
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Zenkevich, I.G., Makarov, A.A. & Eliseenkov, E.V. Gas-chromatographic identification of fluorine-containing organic compounds. J Anal Chem 62, 650–657 (2007). https://doi.org/10.1134/S1061934807070076
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DOI: https://doi.org/10.1134/S1061934807070076