Properties of the Solute-Stationary Liquid Interactions in Gas Liquid Chromatography

Solute-stationary phase interaction in gas liquid chromatography. Thermodynamic parameters for substituted halogenobenzene derivatives.

Thermodynamic parameters were determined by variable temperature experiments on the gas liquid chromatography (GLC) relative retention values, log gamma, of 3- and 4-substituted halogenobenzene derivatives under non-polar condition. These deltadeltaHdegrees(s)(R,X) had a compensational relation with the deltadeltaSdegrees(s)(R,X) values. The free energy change deltadeltaGdegrees(s)(R,X) which i...

The interaction of monosubstituted benzenes with the stationary liquid in gas liquid chromatography.

In gas liquid chromatography (GLC), the relative retention values log gamma was mainly expressed by van der Waals energy (the sum of the dispersion E(dis) and repulsive E(rep) energies) to the interactions between monosubstituted benzene derivatives and the nonpolar stationary liquid as squalane. The single exception was that of anilines, and it was corrected by the electrostatic energy (E(ES))...

Fullerene-impregnated ionic liquid stationary phases for gas chromatography.

A new method has been developed to facilitate the use of fullerenes as stationary phases (SPs) in gas chromatography (GC). In this method, ionic liquids (ILs) are used as solvents to coat fullerenes (C(60), amino-C(60) and hydroxy-C(60)) onto GC columns. However, the ILs serve not just as coating solvents but also act synergistically with fullerenes to provide unique properties as stationary ph...

Gas and Liquid Chromatography

Liquid Crystals as Stationary Phases in Chromatography

The most correct analysis of the compositions of diverse analytes mixtures is significant for analytical studies in different fields; however, many prevalent analytes cannot be identified employing traditional partition gas chromatographic methods. Thus, the increasing requirements on analytes of isomeric compounds and the problems encountered in their separation demand a study of more diverse ...