Ligand-exchange chromatography on thin layers and columns of natural and substituted celluloses

Abstract

The rates of adsorption of antimony, cobalt, mercury and silver on cellulose, diethylaminoethyl and p-aminobenzyl celluloses and cellulose phosphate from diethyl ether have been measured. Columns were prepared with antimony and cobalt pre-treated celluloses and the chromatographic behaviour of dimethylamine, trimethylamine, aniline and ethylenediamine studied. It was shown that these metal-loaded celluloses can be used in ligand-exchange chromatography with organic solvents. Antimony pre-treated celluloses can also be used with aqueous solutions. X-ray diffraction spectra show that the technique proposed is undoubtedly ligand-exchange chromatography and not reversed-phase extraction.