Radiochemical separation of antimony and tellurium in isotope production and in radionuclide generators |
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Authors: | D. Downs D. A. Miller |
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Affiliation: | (1) Department of Chemistry Northridge, California State University, Northridge, CA 91330-8262, USA |
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Abstract: | A potentially useful radionuclide generator for PET studies is based on 118Te/118Sb. A novel single-step approach using anion-exchange chromatography was developed to separate the 118Te parent activity from proton-irradiated targets. The average yield of radiotellurium using this method was 88%, with no detectable radioantimony contamination. A generator system employing activated carbon as a column chromatography adsorbent was studied. An 118Sb elution yield of 87%, with a radiotellurium breakthrough of less than 0.1%/ml, was achieved. Oxidation state studies indicate that approximately 39% of the 118Sb formed in the decay of 118Te is in the form of Sb(V). Details of these separations are presented. This revised version was published online in July 2006 with corrections to the Cover Date. |
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