Abstract
The effect of treating the glass column surface in capillary chromatography with KF and Na 3PO 4 on the retention of polar and non-polar compounds has been investigated. Aliphatic hydrocarbons, benzene, toluene, nitrobenzene, pyridine and polar derivatives of octaine with such functional groups as -NH 2, -OH, -SH, -Br and = C = O have been analyzed using PEG-40M, PEG-40M + KF and PEG-40M + Na 3PO 4 glass capillary columns. The energy contributions of functional groups to partial molar free energy of sorption of octane derivatives on these three columns were calculated. The increase of the energy contributions of proton donor functional groups -NH 2, =NH, -OH for the PEG +KF system was observed and explained by hydrogen bonding with KF taking part as a base in the chromatographic separation.
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