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L. S. Sokolova, A. A. Derbina, E. B. Pashkova, A. V. Pirogov, O. A. Shpigun
Methylene
selectivity in microemulsion liquid chromatography
Abstract
The example of the chromatographic analysis of a mixture of benzene
homologs in a MELC mode with different surfactants showed that the dependence
of the retention of the number of methylene groups has a convex character that
is fundamentally different from the normal mode of reversed-phase HPLC, where
the relationship is exponential. The mechanism of sorption of analytes in MELC
is proposed. The analysis of a test mixture of alkylbenzenes shows a difference
in the behavior of the enthalpy of sorption in MELC and HPLC modes.
Key words:
microemulsion, microemulsion liquid chromatography, methylene selectivity.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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