Chromatography of glycols. Regularities in the retention of C3−C6 branched glycols in gas-solid and gas-liquid chromatography |
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| Authors: | A M Afanassiev V N Demeshev E P Kalyazin G V Kovalev |
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| Institution: | (1) All-Union Correspondence Institute of Engineering, Lomonosov State University of Moscow, 117234 Moscow, USSR |
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| Abstract: | Summary Linear correlation between the major physico-chemical properties of glycols and their relative retention volumes measured
by gas-solid (GSC) and gas-liquid (GLC) chromatography is shown. The coefficients of the linear regression equations describing
the relationship between the relative retention volumes and the physico-chemical parameters (boiling point, density, etc.)
are given. The values of the change in the free energy for the stationary phases studied are given as well as the increments
of this change per −CH2- and CH3-group. The main factors determining the retention of branched glycols on Polysorb, Tween and poly(ethylene glycol) are shown
to be the distance between the hydroxyl groups in their molecules, the presence of alkyl substituents and the type and the
number of these substituents. |
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| Keywords: | Gas-liquid chromatography Gas-solid chromatography Retention by Polysorb PEG and Tween C3− C6 Glycols branched chain Relative retention volumes correlation of |
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