Method of separation of yttrium-90 from strontium-90
- Richland, WA
A method for purifying Y-90 from a Sr-90/Y-90 "cow" wherein raw Sr-90/Y-90 source containing impurities is obtained from nuclear material reprocessing. Raw Sr-90/Y-90 source is purified to a fresh Sr-90/Y-90 source "cow" by removing impurities by addition of sodium hydroxide and by removing Cs-137 by further addition of sodium carbonate. The "cow" is set aside to allow ingrowth. An HDEHP organic extractant is obtained from a commercial supplier and further purified by saturation with Cu(II), precipitation with acetone, and washing with nitric acid. The "cow" is then dissolved in nitric acid and the purified HDEHP is washed with nitric acid and scrubbed with either nitric or hydrochloric acid. The dissolved "cow" and scrubbed HDEHP are combined in an organic extraction, separating Y-90 from Sr-90, resulting in a Sr-90/Y-90 concentration ratio of not more than 10(E-7), and a metal impurity concentration of not more than 10 ppm per curie of Y-90. The separated Y-90 may then be prepared for delivery.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- DOE Contract Number:
- AC06-76RL01830
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Number(s):
- US 5512256
- OSTI ID:
- 870395
- Country of Publication:
- United States
- Language:
- English
Chemistry for commercial scale production of yttrium-90 for medical research
|
journal | January 1990 |
Study on the Separation of Carrier-Free Yttrium-90 from Strontium-90
|
journal | January 1991 |
Purification of di-(2-ethylhexyl)phosphoric acid by precipitation of copper(II) di-(2-ethylhexyl)phosphate
|
journal | August 1969 |
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Related Subjects
separation
yttrium-90
strontium-90
purifying
y-90
sr-90
cow
raw
source
containing
impurities
obtained
nuclear
material
reprocessing
purified
fresh
removing
addition
sodium
hydroxide
cs-137
carbonate
set
aside
allow
ingrowth
hdehp
organic
extractant
commercial
supplier
saturation
cu
ii
precipitation
acetone
washing
nitric
acid
dissolved
washed
scrubbed
hydrochloric
combined
extraction
separating
resulting
concentration
ratio
10
e-7
metal
impurity
ppm
curie
separated
prepared
delivery
concentration ratio
impurity concentration
removing impurities
sodium hydroxide
hydrochloric acid
sodium carbonate
nitric acid
organic extractant
nuclear material
source containing
y-90 source
organic extraction
raw sr-90
containing impurities
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