The influence of organic solvents on the solvent extraction parameters of thorium(IV) and uranim(VI) using substituted secondary, tertiary and quaterner ammoniumnitrates and solutions of nitric acid. Pt. 1

The influence of methanol on the distribution of thorium (IV) and uranium (VI) between aqueous solutions of nitric acid and solutions of Amberlite LA-2, trilaurylamine and Aliquat-336-nitrate has been investigated. The amount of acid in the organic phase increases with increasing concentration of nitric acid and methanol in the aqueous phase. The concentration of acid in the organic phase can be calculated by a given formula for Amberlite LA-2. The distribution of methanol is discussed. The distribution of thorium(IV) and uranium(VI) changes when methanol is added. This is explained by the shift of the equilibrium of the metal complex and by the enhanced extraction of acid. (author)