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Miura, Katsue; Sato, Soichi; Noguchi, Shinichi; Yonekawa, Minoru; Furusho, Yoshiaki*
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no abstracts in English
Sato, Soichi; Iwasaki, Maho; Miura, Katsue; Furusho, Yoshiaki*; Nakayama, Shinichi
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Do, V. K.; Yamamoto, Masahiko; Taguchi, Shigeo; Kuno, Takehiko; Miura, Katsue; Iwasaki, Maho; Sato, Soichi
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Technical support for environmental restoration of Fukushima and decommissioning of Fukushima Daiichi Nuclear Power Station (1F) are the most important mission of Japan Atomic Energy Agency (JAEA). In this presentation, we outline Okuma Analysis and Research Center and our mission on technical development for analyzing rubble and wastes from the decommissioning of 1F. Novel analytical methods are being developed at the center for determining difficult-to-measure nuclides. In addition, some analytical techniques based on liquid electrode plasma optical emission spectrometry, a novel optically spectroscopic method, for measuring elemental composition of highly active liquid wastes is reported.
Do, V. K.; Horita, Takuma; Miura, Katsue; Iwasaki, Maho
no journal, ,
Radioactive Material Analysis and Research Facility has been recently established to support the analysis of samples including fuel debris and radioactive wastes from the decommissioning of Fukushima Daiichi Nuclear Power Station (1F). ICP-MS is considered as a potential analytical tool for long-lived nuclides in fuel debris because of its superior sensitivity. Moreover, the use of ICP-MS is aimed to increase the analysis capacity, which make possible to repeat measurements in order to obtain precise results and to reduce exposed dose of analysts because ICP-MS is much more rapid than radiometric methods. Employing latest advanced technologies, a triple quadrupole ICP-MS, Agilent 8900 (ICP-QQQ-MS), enables to suppress the isobaric interference. In this presentation, we report some demonstrative separations of difficult-to-measure nuclides using the ICP-QQQ-MS system. The obtained results indicate that the separations are possible with suitable reaction gases.