Determination of uranium in electro-refined plutonium by a combined ion-exchange and x-ray fluorescence technique.
Uranium is separated from plutonium by adsorption on an anion-exchange resin from a concentrated hydrochloric acid solution and is eluted from the resin, collected on a disc of cation-exchange paper, and determined by X-ray fluorescence. The lower limit of detection is 2mug of uranium, and 50mug may be determined with a recovery of 98% and a standard deviation of 3.2mug. In plutonium metal, 19ppm of uranium were found, with a standard deviation of 2 ppm (6 results).
Hayden
J A
JA
Analytical Development Group, Rocky Flats Division, Dow Chemical Company, P.O. Box 888, Golden, Colorado 80401, U.S.A.