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Methods for chemical recovery of non-carrier-added radioactive tin from irradiated intermetallic Ti-Sb targets

United States Patent

January 17, 2012
View the Complete Patent at the US Patent & Trademark Office
Brookhaven National Laboratory - Visit the Office of Technology Commercialization and Partnerships Website
The invention provides a method of chemical recovery of no-carrier-added radioactive tin (NCA radiotin) from intermetallide TiSb irradiated with accelerated charged particles. An irradiated sample of TiSb can be dissolved in acidic solutions. Antimony can be removed from the solution by extraction with dibutyl ether. Titanium in the form of peroxide can be separated from tin using chromatography on strong anion-exchange resin. In another embodiment NCA radiotin can be separated from iodide solution containing titanium by extraction with benzene, toluene or chloroform. NCA radiotin can be finally purified from the remaining antimony and other impurities using chromatography on silica gel. NCA tin-117m can be obtained from this process. NCA tin-117m can be used for labeling organic compounds and biological objects to be applied in medicine for imaging and therapy of various diseases.
Lapshina; Elena V. (Troitsk, RU), Zhuikov; Boris L. (Troitsk, RU), Srivastava; Suresh C. (Setauket, NY), Ermolaev; Stanislav V. (Obninsk, RU), Togaeva; Natalia R. (Obninsk, RU)
Brookhaven Science Associates (Upton, NY)
12/ 425,038
April 16, 2009
This invention was made with Government support under contract number DE-AC02-98CH10886, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.