Abstract
1. Empirical equations used for classifying stationary phases in terms of differences in retention indices have been developed. It has been shown that the energy equivalent of the index unit varies from one phase to the other. 2. A system is described by means of which one can estimate the polarities of stationary phases and adsorbents from the differential molar free energies of dissolution of n-alkane methyl groups and five test compounds. 3. A thermodynamic criterion for the selection of a comparison phase in selectivity determinations has been set up. 4. A quantitative method for estimating stationary-phase selectivities from differences in the excess free energy of mixing has been described.
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More From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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