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Title: Use of Chelex-100 for selectively removing Y-90 from its parent Sr-90

A method for selectively removing yttrium-90 from its parent strontium-90 contained in an environmental sample includes loading the sample onto a column containing a chelating ion-exchange resin capable of retaining yttrium-90; washing the column with a solution capable of removing strontium, calcium, and other contaminants from the yttrium-90 fraction retained on the column; removing excess acetate salts from the column; eluting yttrium-90 solution from the column and adjusting the pH of this solution to about 2.7; filtering the yttrium-90 solution and weighing this solution for gravimetric yield; and, counting the yttrium-90 containing solution with a radiological counter for a time sufficient to achieve the statistical accuracy desired. It is preferred that the chelating ion-exchange resin is a ligand having the chemical name iminodiacetic acid mounted on a divinyl benzene substrate, converted from sodium form to ammonia form.
Inventors:
Issue Date:
OSTI Identifier:
201505
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; SCA: 400105; PA: EDB-96:054442; SN: 96001551770
Patent Number(s):
US 5,494,647/A/
Application Number:
PAN: 8-131,185; TRN: 96:009371
Contract Number:
AC07-84ID12435
Resource Relation:
Other Information: PBD: 27 Feb 1996
Research Org:
Westinghouse Idaho Nuclear Co
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; YTTRIUM 90; SEPARATION PROCESSES; STRONTIUM 90; ENVIRONMENTAL MATERIALS; RADIOCHEMICAL ANALYSIS; ION EXCHANGE; ELUTRIATION; GRAVIMETRIC ANALYSIS; ION EXCHANGE MATERIALS

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