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Concentration of perrhenate and pertechnetate solutions

United States Patent

5,729,821
March 17, 1998
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method of preparing a concentrated solution of a carrier-free radioisotope which includes the steps of: a. providing a generator column loaded with a composition containing a parent radioisotope; b. eluting the generator column with an eluent solution which includes a salt of a weak acid to elute a target daughter radioisotope from the generator column in a first eluate. c. eluting a cation-exchange column with the first eluate to exchange cations of the salt for hydrogen ions and to elute the target daughter radioisotope and a weak acid in a second eluate; d. eluting an anion-exchange column with the second eluate to trap and concentrate the target daughter radioisotope and to elute the weak acid solution therefrom; and e. eluting the concentrated target daughter radioisotope from the anion-exchange column with a saline solution.
Knapp; Furn F. (Oak Ridge, TN), Beets; Arnold L. (Clinton, TN), Mirzadeh; Saed (Knoxville, TN), Guhlke; Stefan (Bonn, DE)
Lockheed Martin Energy Research Coirporation (Oak Ridge, TN)
08/ 770,072
December 10, 1996
The United States Government has rights in this invention pursuant to contract no. DE-AC05-96OR22464 between the United States Department of Energy and Lockheed Martin Energy Research Corporation.