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Seki, Misaki; Ishikawa, Koji*; Sano, Tadafumi*; Nagata, Hiroshi; Otsuka, Kaoru; Omori, Takazumi; Hanakawa, Hiroki; Ide, Hiroshi; Tsuchiya, Kunihiko; Fujihara, Yasuyuki*; et al.
KURNS Progress Report 2019, P. 279, 2020/08
no abstracts in English
Magara, Masaaki; Usuda, Shigekazu; Sakurai, Satoshi; Watanabe, Kazuo; Esaka, Fumitaka; Hirayama, Fumio; Lee, C. G.; Yasuda, Kenichiro; Kono, Nobuaki; Inagawa, Jun; et al.
Dai-26-Kai Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Nenji Taikai Rombunshu, p.157 - 164, 2005/00
JAERI has conducted the analysis of domestic and the IAEA samples. JAERI is developing the analytical techniques to improve the analytical ability for the safeguards environmental samples. For bulk analysis, study is focused on the improvement of reliability of isotope ratio measurements by ICP-MS. New chemical separation techniques are under development and a desolvation module is introduced to reduce the polyatomic interferences. In particle analysis, the sample preparation procedure for SIMS method is modified to measure the 
U/
U and 
U/U ratios for individual particles. We are also developing fission track-TIMS method to measure uranium isotope ratios in particles of sub-micrometer size. A screening instrument of X-ray fluorescent analysis is equipped to measure elemental distribution on a swipe surface.
Magara, Masaaki; Usuda, Shigekazu; Sakurai, Satoshi; Watanabe, Kazuo; Esaka, Fumitaka; Hirayama, Fumio; Lee, C. G.; Yasuda, Kenichiro; Kono, Nobuaki; Inagawa, Jun; et al.
Proceedings of INMM 46th Annual Meeting (CD-ROM), 8 Pages, 2005/00
JAERI has been developing analytical techniques for ultra-trace amounts of nuclear materials in the environmental samples in order to contribute to the strengthened safeguards system. Development of essential techniques for bulk and particle analysis of the environmental swipe sample has been established as an ultra-trace analytical method of uranium and plutonium. In January 2003, JAERI was qualified as a member of the IAEA network analytical laboratories for environmental samples. Since then, JAERI has conducted the analysis of domestic and the IAEA samples. From Japanese fiscal year 2003, the second phase of the project was started for the development of advanced techniques, such as analyzing minor actinides and fission products as well as uranium and plutonium, particle analysis using fission-track technique, more efficient particle analysis using ICP-TOFMS and screening by X-ray fluorescent analysis. This paper deals with the progress in the development of the new techniques, applications and future perspective.
Asai, Shiho; Sakai, Akihiro; Yoshimori, Michiro; Kihara, Shinji
JAERI-Tech 2003-071, 46 Pages, 2003/08
JAERI-Tech-2003-071.pdf:4.31MB
As part of survey concerning radioactive inventory of radwastes arising from research institutes, an analytical scheme has been studied for verifying their nuclide composition based on calculation analysis and record, in consideration of the its characteristics. In this study, radwastes are used as samples, which arise from research and testing reactors and post-irradiation examination facilities (PIE facilities). Though separation procedures are simplified and rationalized, quantifiable values could be obtained with relative errors under 10% for almost all the samples containing nuclides like 
Ni and U which concentrations are low, and recoveries were high on the whole. These show that the analytical scheme is useful for chemical separation of radwastes arising from research and testing reactors and PIE facilities.
Hatsukawa, Yuichi; Oshima, Masumi; Hayakawa, Takehito; Toh, Yosuke; Shinohara, Nobuo
Journal of Radioanalytical and Nuclear Chemistry, 248(1), p.121 - 124, 2001/04
Times Cited Count：6 Percentile：44.06(Chemistry, Analytical)no abstracts in English
Th and 
PuTsukada, Kazuaki; Shinohara, Nobuo; Nishinaka, Ichiro; ; Nagame, Yuichiro; Sueki, Keisuke*; *; Nakahara, Hiromichi*; *; Otsuki, Tsutomu*
Radiochimica Acta, 76(4), p.173 - 180, 1997/00
no abstracts in English
Shinohara, Nobuo; Usuda, Shigekazu
Nihon Genshiryoku Gakkai-Shi, 37(10), p.907 - 913, 1995/00
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
; ; Nomura, Kazunori; ; Washiya, Tadahiro*; Koizumi, Masumichi
PNC TN1600 93-004, 119 Pages, 1993/11
None
Usuda, Shigekazu
Dai-4-Pan Jikken Kagaku Kouza, 14; Kaku, Hoshasen, p.124 - 140, 1992/00
no abstracts in English
Handa, Nuneo; Hirata, Masaru; Shiozawa, Kenichi;
JAERI-M 90-015, 134 Pages, 1990/02
no abstracts in English
Shinohara, Nobuo
JINR-D7-90-142, p.70 - 83, 1990/00
no abstracts in English
Naganawa, Hirochika
no journal, ,
By the request from Nuclear Cycle Backend Directorate, an innovative chemical separation technique for radioactive materials and metals, Emulsion-flow method, will be introduced in the seminar at Rokkasho-mura titled Rokkasho Nuclear Fuel Cycle Seminar.
Asai, Shiho; Saito, Kyoichi*
no journal, ,
ICP-MS is a promising technique for the determination of radionuclides along with various radiometric instruments. However, the tedious chemical separation procedure is generally required to achieve an interference-free measurement. Particularly in the case of highly radioactive samples, a simplified separation procedure is a prerequisite for safe and efficient analyses. In this study, we have developed micro-volume solid phase extraction cartridges that enable high-throughput separation. A disk-shaped porous polymer with the volume of 0.08 cm
is packed inside the cartridge. This porous polymer has functional-group-containing polymer chains, which are densely attached onto the pore surface of the polymer. A wide variety of functional-groups can be bound to the polymer chains, expanding the applicability of our products. This presentation mainly describes the applicability of the proposed cartridges to the separations for ICP-MS measurement of various radionuclides.
Cu using thermoseparation for cancer therapyOta, Akio*; Kawabata, Masako*; Motoishi, Shoji*; Saeki, Hideya*; Hashimoto, Kazuyuki*; Tsukada, Kazuaki; Hatsukawa, Yuichi*; Nagai, Yasuki*
no journal, ,
Cu and 
Cu are recognized to be promising radioisotopes for cancer therapy and diagnosis in nuclear medicine. It is possible to produce both Cu and Cu using accelerator neutrons from the zinc sample with different isotopic enrichment level, therefore the same separation procedure can be applied for both radioisotopes. Three-step-column separation chemistry was previously reported to separate Cu from the irradiated zinc sample. This paper reports that newly developed thermo-separation system to remove the bulk zinc from the sample using a difference in vapor pressure between Zn and Cu.
Seki, Misaki; Ishikawa, Koji*; Fujihara, Yasuyuki*; Sano, Tadafumi*; Nagata, Hiroshi; Otsuka, Kaoru; Omori, Takazumi; Ide, Hiroshi; Hori, Junichi*; Tsuchiya, Kunihiko
no journal, ,
no abstracts in English
