Analytical Method for THE DETERMINATION OF PLUTONIUM IN URANIUM PLANT SOLUTIONS (Lanthanum Fluoride Co-precipitation from Ammonium Sulphate Solution)

摘要

Plutonium is co-precipitated with lanthanum fluoride from a solution containing ammonium sulphate. The ammonium sulphate complexes the uranyl ion and prevents the precipitation of uranium as fluoride. The precipitate is mounted evenly on a stainless steel counting tray and the a-activity is measured using standard a-scintillation counting equipment. The equipment is calibrated against standard sources.