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Enthalpy and entropy effects for homologous solutes in HPLC with alkali chain bonded phases

Haleem J. Issaq, Mietek Jaroniec

Abstract

Retention for homologous solutes in reversed phase high performance liquid chromatography is studied using C 1 , C 4 , C 8 and C 18 alkyl chain bonded phases. For three homologous series the capacity ratios measured at different temperatures are analyzed in order to estimate the enthalpy and entropy effects in reversed phase HPLC

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Key concepts: Homologous series, Chemistry, Enthalpy, High-performance liquid chromatography, Chromatography, Alkyl, Entropy (arrow of time), Alkali metal