Separation of carrier free95mTc from niobium targets irradiated with alpha-particles |
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| Authors: | T. Sekine M. Konishi H. Kudo K. Tagami S. Uchida |
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| Affiliation: | (1) Department of Chemistry, Graduate School of Science, Tohoku University, 980-77, Sendai, Japan;(2) Environmental and Toxicological Sciences Research Group, National Institute of Radiological Sciences, 311-12 Ibaraki, Japan |
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| Abstract: | A95mTc tracer with an excellent quality was prepared by a simple sublimation method after α-bombardment of niobium metal. Technetium-95m produced by the93Nb(α,2n)95mTc reaction was separated from the niobium targets in a quartz tube by heating at 1100°C in an oxygen gas flow. Technetium-95m sublimed as an oxide was deposited on the inner wall of the quartz tube outside an electric furnace, and then collected as a pertechnetate solution by washing with water. The ICP-MS analysis of the95mTc solution revealed its excellent quality, compared to a95mTc solution prepared from the same targets through a wet chemical separation method and a commercial95mTc solution. With this tracer, the precision of ICP-MS analysis of99Tc in environmental samples are highly improved. |
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