Abstract
Correlations were studied between the structure and the retention indices of alkylbenzenes on three stationary phases with different polarities and Δ I values. It is demonstrated that high-precision measurements of the retention indices of alkylbenzenes on these stationary phases yield sufficient structural details to permit some new correlations in this area. The extent to which Δ I values can be used for identification purposes on the basis of comparisons between measured retention data and tabulated data and/or calculated data based on retention index increments corresponding to characteristic functional groups in the molecules is discussed. It is shown that alkylbenzenes that have close Δ I values can be differentiated by virtue of their d I/d T values.
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