Method for isolating and purifying 90Y From 90strontium in multi-curie quantities
US6309614A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Apr 14, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21F9/007
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a process for separating and purifying multi-curie quantities .sup.90 Y of sufficient chemical and radiochemical purity suitable for use in medical applications without a series of .sup.90 Sr selective extraction chromatographic columns while minimizing loss of radioactive .sup.90 Sr parent and waste stream. The process includes dissolving a nitrate salt of an original .sup.90 Sr stock solution in H.sub.2 O creating a strontium nitrate solution; acidifying the strontium nitrate solution containing .sup.90 Y with concentrated nitric acid; evaporating the strontium nitrate solution; filtering or centrifuging strontium nitrate solution to separate crystalline .sup.90 Sr nitrate salt from the solution; evaporating the remaining .sup.90 Y enriched supernate to dryness; dissolving the remaining .sup.90 Y 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.