Determinations of gas–liquid partition coefficients using capillary chromatographic columns. Alkanols in squalane
- Tascon, Marcos
- Romero, Lilian M.
- Acquaviva, Agustín
- Keunchkarian, Sonia
- Castells, Cecilia Beatriz Marta
DOIAbstract
This study focused on an investigation into the experimental quantities inherent in the determination of partition coefficients from gas–liquid chromatographic measurements through the use of capillary columns.Wepreparedseveral squalane – (2,6,10,15,19,23-hexamethyltetracosane) – containing columns with very precisely known phase ratios and determined solute retention and hold-up times at 30, 40, 50 and 60 ◦C. We calculated infinite dilution partition coefficients from the slopes of the linear regression of retention factors as a function of the reciprocal of the phase ratio by means of fundamental chromatographic equations. In order to minimize gas–solid and liquid–solid interface contributions to retention, the surface of the capillary in...
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