Ammonium Salts of the Heteropolyacids as Cation Exchangers

An Inorganic Microsphere Composite for the Selective Removal of137Cesium from Acidic Nuclear Waste Solutions. 1: Equilibrium Capacity and Kinetic Properties of the Sorbent

“…[1,2] It was first shown from chromatographic studies that AMP showed remarkable selectivity for the larger alkali metal ions and therefore had potential as a new type of selective cation exchanger. [3] Cations absorbed on the AMP exchanger are completely stripped of hydration water upon entering the lattice. [4] The selectivity of this compound is partially a function of the size of the anhydrous form of the counter ion, thus it is specific to a very small set of cations of similar ''bare'' ionic radius with a typical selectivity sequence for metal ions Cs + .…”

A Comparison of Crystalline Silicotitanate and Ammonium Molybdophosphate-Polyacrylonitrile Composite Sorbent for the Separation of Cesium from Acidic Waste

“…3H 2 O (AMP), is a yellow crystal-A COMPARISON OF CRYSTALLINE SILICOTITANATE 399 line inorganic compound that has been shown to have the requisite selectivity and stability properties. It has been demonstrated by Smit and Van [9] to be highly selective for Cs; it exhibits a selectivity sequence for the alkali metals similar to other heteropoly acids of the Keggin structure: Cs + > Rb + > K + > Na + > Li + . The ion-exchange mechanism of AMP is reported by Buchwald and Thistlethwaite [10] as an isomorphous exchange of cesium ions for ammonium ions in the crystal lattice.…”

EFFECTS OF SELECTED LIMNOLOGICAL FACTORS ON THE ACCUMULATION OF $sup 137$Cs FALLOUT BY LARGEMOUTH BASS (MICROPTERUS SALMOIDES).

“…Individual fish, less gut contents, were digested in concentrated nitric acid and the subsequent solution was treated with ammonium molybdophosphate (AMP) res in to collect the cesium isotopes (Smit, 1958;Feldman and Rains, 1964). The AMP residue was dissolved.…”