Abstract
Liquid adsorption chromatography of organic compounds (aromatic hydrocarbons, acids, phenol, anisole, benzaldehyde and acetophenone) was studied at 293 K on two carbon stationary phases. Acetonitrile, acetonitrile—water (2:3) and n-heptane were used as mobile phases. Capacity factors and Henry's constants of adsorption equilibrium of aromatic compounds were calculated from the values of their retention volumes. The influence of the chemical structure of organic compounds, the surface structure of the stationary phases and the nature of the mobile phases on retention parameters was established. The differences in adsorption mechanism of organic compounds on hydroxylated and modified silica and carbon stationary phases are discussed.
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