Thin Layer Chromatography of Amino Acids on Titanium Tungstate using Dimethyl Sulfoxide as the Mobile Phase

摘要

Inorganic ion-exchange materials have been used earlier in TLC of amino acids (1,2). The "selectivity" and dual phenomenon of "adsorption" and "ion-exchange" in addition to the effect of the mobile phase led to some useful separations of these acids. Titanium tungstate possesses high thermal and chemical stability and reasonably higher exchange capacity among the zirconium phosphate type exchangers. A literature survey reveals that it has not been used earlier for the separation of amino acids.