Inorganic ion exchangers in paper and thin-layer chromatographic separations

Abstract

Planar chromatography, i.e., paper and thin-layer chromatography, is a simple and fast method for the separation of various classes of organic and inorganic compounds. Numerous inorganic and organic stationary phases were used in planar chromatography providing effective separations based on different mechanisms. Apart from the most commonly used stationary phases such as cellulose, silica gel, alumina, and modified silica gels, various inorganic ion exchangers were successfully used as sorbents in planar chromatography in a large number of cases. Due to the introduction of ion exchange as an additional separation mechanism, the selectivity of planar chromatography was significantly improved, especially for the separation of inorganic ions and polar organic substances. Numerous literature data related to the usage of inorganic ion exchangers in both paper and thin-layer chromatographic separations are presented through corresponding applications. © 2012 Springer Science+Business Media B.V. All rights are reserved.