Polystyrene Thorium(IV) Phosphate as a New Crystalline and Cadmium Selective Fibrous Ion Exchanger. Synthesis Characterization and Analytical Applications

Abstract

Some investigations on the preparative procedures of fibrous polystyrene thorium(IV) phosphate (PStThP) are reported. This new fibrous ion exchanger has been characterized on the basis of scanning electron microscopy, X-ray diffraction analysis, IR, thermogravimetric analysis, and ion exchange studies. The ion exchange capacity for Na+ ion is found to be 4.52 mequiv/dry g basis. Separation factors and Kd values for various cations at different concentrations have been determined, and a marked selectivity for Cd(II) has been found. The unusual selectivity for Cd(II) should lead to some useful practical applications.