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Journal Articles

Radiochemical analysis of rubble collected from Fukushima Daiichi Nuclear Power Station

Sato, Yoshiyuki; Tanaka, Kiwamu; Ueno, Takashi; Ishimori, Kenichiro; Kameo, Yutaka

Hoken Butsuri, 51(4), p.209 - 217, 2016/12

A large amount of contaminated rubbles were generated by the accident at the Fukushima Daiichi Nuclear Power Station (F1NPS). For safe decommissioning of F1NPS, it is important to evaluate the composition and concentration of radionuclides in the rubbles. In this paper, to characterize the rubbles collected at F1NPS in Unit-1, Unit-2 and Unit-3, radiochemical analysis was operated. As a result of radiochemical analysis, $$gamma$$-ray-emitting nuclides $$^{60}$$Co, $$^{137}$$Cs and $$^{152,154}$$Eu, $$beta$$-ray-emitting nuclides $$^{3}$$H, $$^{14}$$C, $$^{90}$$Sr and $$^{99}$$Tc, and $$alpha$$-particle-emitting nuclides $$^{238,239+240}$$Pu, $$^{241}$$Am and $$^{244}$$Cm were detected. In contrast, $$^{94}$$Nb and $$^{152}$$Eu concentrations were below the detection limit. Measured radioactive concentrations implied that $$^{3}$$H, $$^{14}$$C, $$^{60}$$Co and $$^{90}$$Sr concentrations depended on $$^{137}$$Cs concentration respectively. This analysis was characterized the radioactivity concentrations of the rubbles.

Journal Articles

Chemical analysis of transuranium nuclides in the uranium solution of the JCO criticality accident

Shinohara, Nobuo; Kono, Nobuaki; Suyama, Kenya; Inagawa, Jun; Nakahara, Yoshinori; Kurosawa, Setsumi; Watanabe, Kazuo; Usuda, Shigekazu; Oshima, Masumi; Katsuta, Hiroji; et al.

Radiochimica Acta, 89(3), p.135 - 138, 2001/05

 Times Cited Count:2 Percentile:77.59(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Journal Articles

Radiochemical Analysis

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Cho Biryo Seibun Bunseki, 3, p.207 - 232, 1970/00

no abstracts in English

Journal Articles

Determination of magnesium and mercury by re-activation analysis

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Nihon Kagaku Zasshi, 86(1), p.74 - 77, 1965/00

no abstracts in English

Oral presentation

Radiochemical analysis of living tree collected from Fukushima-1 Nuclear Power Station

Tanaka, Kiwamu; Ueno, Takashi; Yasuda, Mari; Shimada, Asako; Hoshi, Akiko; Kameo, Yutaka

no journal, , 

no abstracts in English

Oral presentation

Characterization of secondary waste generated by Fukushima Daiichi Nuclear Power Station accident, 2; Radiochemical analysis of slurry generated from multi-radionuclide removal system

Hinai, Hiroshi; Shinoda, Yoshiharu; Kurosawa, Akira; Ikeda, Akira*; Obata, Masamichi*; Shibata, Atsuhiro; Nomura, Kazunori

no journal, , 

no abstracts in English

Oral presentation

Pretreatment technique of environmental sample for radioactivity analysis using supercritical water reaction

Nagaoka, Mika; Fujita, Hiroki; Aida, Taku*; Smith, R.*

no journal, , 

Radioactivity concentration in environmental sample such as leaf, seaweed has been measured through chemical separation with organic matter decomposition and extraction of target element. However, the usual chemical treatment could affect worker's health, chemical hood and surrounding environment by usage of chemical regent. On the other hand, supercritical water reaction could decompose organic matter without health and environmental hazard caused by the regent. Therefore, we have tried to apply the supercritical water reaction to radioactivity analysis of environmental samples. In this research, organic matter content and strontium concentration in environmental sample were compared with between before and after the reaction. The organic matters were highly decomposed with the water reaction at higher temperature and for longer reaction time. However the strontium was not extracted into solution after the reaction.

Oral presentation

Development of confirmation methods of waste packages to radioactive wastes generated from research facilities, 2; Construction of radiochemical analytical scheme for metal samples

Shimomura, Yusuke; Kochiyama, Mami; Haraga, Tomoko; Ishimori, Kenichiro; Kameo, Yutaka

no journal, , 

no abstracts in English

Oral presentation

Characterization of secondary waste generated by Fukushima Daiichi nuclear power station accident, 7; Radiochemical analysis of sludge generated from decontamination device

Hinai, Hiroshi; Sato, Daisuke; Myodo, Masato; Koma, Yoshikazu; Shibata, Atsuhiro; Nomura, Kazunori

no journal, , 

no abstracts in English

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