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

Patent ·
OSTI ID:870313
 [1]
  1. Idaho Falls, ID
+ Show Author Affiliations

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 bidente ligand having the chemical name iminodiacetic acid mounted on a divinyl benzene substrate, converted from sodium form to ammonia form.

Research Organization:
WESTINGHOUSE IDAHO NUCLEAR CO
DOE Contract Number:
AC07-84ID12435
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 5494647
OSTI ID:
870313
Country of Publication:
United States
Language:
English

References (1)

New process makes high-purity yttrium-90 journal August 1990

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Related Subjects

chelex-100
selectively
removing
y-90
parent
sr-90
method
yttrium-90
strontium-90
contained
environmental
sample
loading
column
containing
chelating
ion-exchange
resin
capable
retaining
washing
solution
strontium
calcium
contaminants
fraction
retained
excess
acetate
salts
eluting
adjusting
ph
filtering
weighing
gravimetric
yield
counting
radiological
counter
time
sufficient
achieve
statistical
accuracy
desired
preferred
bidente
ligand
chemical
name
iminodiacetic
acid
mounted
divinyl
benzene
substrate
converted
sodium
form
ammonia
solution capable
environmental sample
acetic acid
selectively removing
time sufficient
exchange resin
column containing
ion-exchange resin
removing excess
acetate salts
sodium form
containing solution
iminodiacetic acid
divinyl benzene
/423/