Linear temperature coefficient of retention index in GC

Abstract

This article deal with the study of temperature-programmed retention indices of the aniline N-alkyl
derivatives. Measuring was conducted at the different heating rates (from 2 to 8 °C/min). There were
established linear dependence of retention indices on the temperature-programming rate. The dependence
founded are possessed high correlative abilities. It allows to fulfill prognosive calculation of the retention
indices at other heating rates. A new parameter – the linear temperature coefficient of retention index is
educed. It linearly depends on the structural parameters of the solute homologues series (homologue
sequence number, screening corner of the heteroatom by alkyl radical). It allows to fulfill prognosive
calculation of the linear temperature coefficient of retention indices in the solute homologues series.