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Title: Method for generating a crystalline {sup 99}MoO{sub 3} product and the isolation {sup 99m}Tc compositions therefrom

An improved method is described for producing {sup 99m}Tc compositions. {sup 100}Mo metal is irradiated with photons in a particle (electron) accelerator to produce {sup 99}Mo metal which is dissolved in a solvent. A solvated {sup 99}Mo product is then dried to generate a supply of {sup 99}MoO{sub 3} crystals. The crystals are thereafter heated at a temperature which will sublimate the crystals and form a gaseous mixture containing vaporized {sup 99m}TcO{sub 3} and vaporized {sup 99m}TcO{sub 2} but will not cause the production of vaporized {sup 99}MoO{sub 3}. The mixture is then combined with an oxidizing gas to generate a gaseous stream containing vaporized {sup 99m}Tc{sub 2}O{sub 7}. Next, the gaseous stream is cooled to a temperature sufficient to convert the vaporized {sup 99m}Tc{sub 2}O{sub 7} into a condensed {sup 99m}Tc-containing product. The product has high purity levels resulting from the use of reduced temperature conditions and ultrafine crystalline {sup 99}MoO{sub 3} starting materials with segregated {sup 99m}Tc compositions therein which avoid the production of vaporized {sup 99}MoO{sub 3} contaminants. 1 fig.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
672652
Report Number(s):
US 5,802,438/A/
PAN: US patent application 8-801,981; TRN: 99:001114
DOE Contract Number:
AC07-94ID13223
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 1 Sep 1998
Research Org:
Lockheed Martin Idaho Tech Co
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; TECHNETIUM 99; ISOTOPE PRODUCTION; MOLYBDENUM 100; MOLYBDENUM 99; DISSOLUTION; MOLYBDENUM OXIDES; SUBLIMATION; TECHNETIUM OXIDES; OXIDATION; VAPOR CONDENSATION