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In this paper the formation of polyatomic ions containing 99Tc in nuclear samples is studied under various experimental conditions. The formation of several polyatomic ions containing Tc was observed in leachates of spent fuel at high Tc concentrations. Peaks at m/z 115, 131 and 147 were assigned to TcO(+), TcO(2)(+) and TcO(3)(+), the TcO(2)(+) being the predominant polyatomic ion. The ratios of the polyatomic ion to the main 99Tc peak were estimated using Rh as the internal standard. Applications for the determination of Tc in spent fuel nuclear fuel dissolver solutions and dissolution residues are described. Semiquantitative approaches were applied to the study of Tc leaching from spent nuclear fuel and vitrified high-activity waste.

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Authors: GARCIA ALONSO J I, JRC Karlsruhe (DE);SENA F, JRC Karlsruhe (DE);KOCH L, JRC Karlsruhe (DE)
Bibliographic Reference: Article: Journal of Analytical Atomic Spectrometry, Vol. 9 (1994) pp. 1217-1222
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