Studies on Stannic Selenoarsenate. II. Separation of Uranium from Numerous Metal Ions

Abstract

Stannic selenoarsenate has been synthesized by adding 0.05 M sodium selenite and 0.05 M sodium arsenate to a 0.05 M solution of stannic chloride in a volume ratio of 1:l:l at pH 1. A tentative structure has been proposed on the basis pf chemical composition, pH titrations, and infrared and thermogravimetric analyses. Distribution coefficients of several metal ions have been studied in hydrochloric acid, citric acid, ammonium citrate-citric acid, and water-dioxane systems. The unusual adsorption behavior of uranium has been utilized for its quantitative separation from several metal ions.