Abstract
A polymeric resin-based stationary phase was used to study the retention of alkylphenols, alkylbenzenes, substituted benzenes and fused-ring compounds with different eluents. Various 100% organic solvents were used as eluents in order to observe the relative ability to solvents to elute compounds of given chemical structure. Plots of log k′ vs. number of carbons in a chain attached to the aromatic ring showed linear correlations with slopes that are dependent on solvent type and solute functionality. Of the solvents studied, acetonitrile exhibited the highest solvating ability for the benzene ring and for several functional groups. Ethanol was shown to have the strongest eluting power for the methylene group. The relative ability of several solvents to elute polynuclear aromatic hydrocarbons in solid-phase extraction was determined. The functional group contribution (τ) was calculated for selected compounds and acceptable agreement was found in the correlation between experimental and predicted values for solute capacity factor.
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