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Report No.

Development of analytical methods for iodine-129 in sample from reprocessing plant by inductively coupled plasma mass spectrometry with collision reaction cell technique

Saegusa, Yu; Kodaka, Noriyasu; Yamamoto, Masahiko   ; Horigome, Kazushi ; Inada, Satoshi; Kuno, Takehiko 

Iodine-129 ($$^{129}$$I), which is a long-lived radionuclide, has high analytical needs for trace concentrations in gaseous and liquid radioactive waste to evaluate the environmental impact of treatment and disposal. However, conventional analytical methods such as gamma ray spectrometry, liquid scintillation counter, and inductively coupled plasma mass spectrometry (ICP-MS) are difficult to apply due to measurement sensitivity and isobaric interference. In this study, we have been developed analytical method for $$^{129}$$I by ICP-MS with collision reaction cell technique. Reaction gas has been introduced into the collision reaction cell and isobaric ion has been eliminated. In this presentation, the measurement results of $$^{129}$$I in the iodine adsorption filter collected from the liquid waste treatment facility of Tokai Reprocessing Plant is reported.



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