Separation of carrier free 95mTc from niobium targets irradiated with alpha-particles

T. Sekine, M. Konishi, H. Kudo, K. Tagami, S. Uchida

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13 Citations (Scopus)


A 95mTc tracer with an excellent quality was prepared by a simple sublimation method after α-bombardment of niobium metal. Technetium-95m produced by the 93Nb(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 the 95mTc solution revealed its excellent quality, compared to a 95mTc solution prepared from the same targets through a wet chemical separation method and a commercial 95mTc solution. With this tracer, the precision of ICP-MS analysis of 99Tc in environmental samples are highly improved.

Original languageEnglish
Pages (from-to)483-487
Number of pages5
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number3
Publication statusPublished - 1999 Jan 1

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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