Title:
A method for isolating and purifying 90y from 90strontium in multi-curie quantities
Document Type and Number:
WIPO Patent Application WO2001080251
Kind Code:
A3
Abstract:
The invention relates to a process for separating and purifying multi-curie quantities 90Y of sufficient chemical and radiochemical purity suitable for use in medical applications without a series of 90Sr selective extraction chromatographic columns while minimizing loss of radioactive 90Sr parent and waste stream. The process includes dissolving a nitrate salt of an original 90Sr stock solution in H2O creating a strontium nitrate solution; acidifying the strontium nitrate solution containing 90Y with concentrated nitric acid; evaporating the strontium nitrate solution; filtering or centrifuging strontium nitrate solution to separate crystalline 90Sr nitrate salt from the solution; evaporating the remaining 90Y enriched supernate to dryness; dissolving the remaining 90Y enriched supernate in a strong acid; passing the solution through an yttrium selective extraction chromatographic column; rinsing the yttrium selective extraction chromatographic column with strong acid; and eluting yttrium from yttrium selective extraction column with strong acid.
Inventors:
HORWITZ E PHILIP (US)
HINES JOHN J (US)
HINES JOHN J (US)
Application Number:
PCT/US2001/012116
Publication Date:
April 25, 2002
Filing Date:
April 13, 2001
Export Citation:
Assignee:
PG RES FOUNDATION INC (US)
International Classes:
B01D11/04; B01D59/26; G01N30/06; B01J20/281; C01F17/10; C22B3/42; C22B3/44; C22B26/20; C22B59/00; G01N30/88; G21F9/00; (IPC1-7): G21F9/00; G21G4/08
Foreign References:
| US5494647A | 1996-02-27 |
Other References:
ACHUTHAN, P.V. ET AL: "Separation of carrier-free 90Y from high level waste by extraction chromatographic technique using 2-ethylhexyl-2-ethylhexyl phosphonic acid (KSM-17).", SEPARATION SCIENCE AND TECHNOLOGY (JAN 2000) V. 35(2) P. 261-270. CODEN: SSTEDS ISSN: 0149-6395, January 2000 (2000-01-01), United States, XP001064917
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