Anion exchange separation and determination of yttrium in uranium oxide — Yttrium oxide mixture

A procedure has been developed for quantitative separation of yttrium from uranium by anion exchange from nearly saturated NH₄Cl solution in 0–2N HCl medium. Apparently no organic matter is leached out during the separation as yttrium could be determined by EDTA titration without resorting to fuming with perchloric acid before titration. The precision obtained in the analysis of yttrium in a mixture containing about 12 mg of yttrium and about 300 mg of uranium was ±0.3% (27 determinations).