Rubidium benzenesulphonate as a stationary phase in the gas chromatography and separation of isomers of phenols and pyridine bases

Ligand-exchange gas chromatographic separation of pyridine bases

“…Physical adsorption of the sample components on the surface of zirconium phosphate particles also caused the peak tailing. In gas-solid adsorption chromatography, it has been known that the peak tailing which is due to the nonlinearity of the adsorption isotherm can be reduced greatly by modifying the active surfaces of the adsorbents with inorganic salts (2)(3)(4)(5)(6) and/or by coating the surfaces with thin film of a polymer (7)(8)(9)(10). Vidal-Madjar and Guiochon demonstrated the usefulness of some metal-phthalocyanine complexes coated on graphitized carbon black as column packings to obtain symmetrical peaks and high selectivity (11,12).…”