Unified retention concept - Statistical treatment of Kovats retention index

Abstract

A detailed analysis of the unified retention index is given. Comparison between the calculated unified retention indices and the measured ones for alkanes, cycloalkanes and alkylbenzenes on squalane, methylsilicone and dinonylphthalate stationary phases has shown that some similarities exist. It is demonstrated that the unified retention index provides a better procedure for the precalculation of retention indices at any desired temperature than any model that has hitherto been published.