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Np content in spent nuclear fuelAsai, Shiho; Hanzawa, Yukiko; Konda, Miki; Suzuki, Daisuke; Magara, Masaaki; Kimura, Takaumi; Ishihara, Ryo*; Saito, Kyoichi*; Yamada, Shinsuke*; Hirota, Hideyuki*
Analytical Chemistry, 88(6), p.3149 - 3155, 2016/03
Times Cited Count：7 Percentile：30.39(Chemistry, Analytical)Neptunium-237 (Np) is one of the major long-lived radionuclides found in spent nuclear fuel. To evaluate the long-term safety of a HLW repository, the Np content in spent nuclear fuel must be determined. In this study, micro-volume anion-exchange porous polymer disk-packed cartridges were prepared for Am-Np separation, which is required prior to the measurement of Np with ICP-MS. Disks with a volume of 0.08 cm
were cut out from porous sheets having triethylenediamine (TEDA)-containing polymer chains densely attached on the pore surface. The resulting TEDA-introduced disk cartridge was applied to a spent nuclear fuel sample. The chemical yield of Np was 90.4%, which is sufficiently high for ICP-MS measurement of Np. Compared with the conventional separation technique using commercially available anion-exchange resin columns, the time required to adsorb, wash and elute Np using the TEDA-introduced disk cartridge was reduced by 75%.
Np M
essbauer parameter and crystal structure of neptunyl compoundsSaeki, Masakatsu
Nihon Kessho Gakkai-Shi, 46(6), p.415 - 420, 2004/12
no abstracts in English
Nakamoto, Tadahiro*; Nakada, Masami; Nakamura, Akio
Journal of Nuclear Science and Technology, 39(Suppl.3), p.102 - 105, 2002/11
no abstracts in English
ssbauer spectroscopic studies of Np in aqueous solutionsNakada, Masami; Masaki, Nobuyuki; Yamashita, Toshiyuki
Journal of Nuclear Science and Technology, 39(Suppl.3), p.426 - 428, 2002/11
no abstracts in English
at 25KMasaki, Nobuyuki; Nakada, Masami; Tsutsui, Satoshi; Nakamura, Akio; Yamashita, Toshiyuki
Physica B; Condensed Matter, 281-282, p.256 - 257, 2000/06
Times Cited Count：4 Percentile：28.26(Physics, Condensed Matter)no abstracts in English
I and 
I in the proton-, 
C- and 
F-induced fission of 
U, Np and 
UShinohara, Nobuo; Tsukada, Kazuaki; Ichikawa, Shinichi; Magara, Masaaki; Hatsukawa, Yuichi
Radiochimica Acta, 88(1), p.1 - 5, 2000/00
Times Cited Count：1 Percentile：12.36(Chemistry, Inorganic & Nuclear)no abstracts in English
Np,Pu and 
Am in sedimentary materialsTanaka, Tadao; Muraoka, Susumu
Journal of Radioanalytical and Nuclear Chemistry, 240(1), p.177 - 182, 1999/00
Times Cited Count：11 Percentile：64.41(Chemistry, Analytical)no abstracts in English
Saeki, Masakatsu; Nakada, Masami; Nakamoto, Tadahiro*; ; Yamashita, Toshiyuki
Journal of Alloys and Compounds, 271-273, p.176 - 179, 1998/00
Times Cited Count：4 Percentile：39.68(Chemistry, Physical)no abstracts in English
Kumata, Masahiro; Vandergraaf, T. T.*
Journal of Contaminant Hydrology, 35(1-3), p.31 - 40, 1998/00
Times Cited Count：6 Percentile：24.7(Environmental Sciences)no abstracts in English
Np Moessbauer spectroscopic study on pentavalent neptunium glycolate complexNakamoto, Tadahiro*; Nakada, Masami; ; Saeki, Masakatsu; Yamashita, Toshiyuki
Journal of Radioanalytical and Nuclear Chemistry, 227(1-2), p.137 - 141, 1998/00
Times Cited Count：2 Percentile：38.16(Chemistry, Analytical)no abstracts in English
Np and U Moessbauer measurementsNakada, Masami; Saeki, Masakatsu; ; Tsutsui, Satoshi*
Journal of Radioanalytical and Nuclear Chemistry, 232(1-2), p.201 - 207, 1998/00
Times Cited Count：8 Percentile：57.94(Chemistry, Analytical)no abstracts in English
Shinohara, Nobuo; Kono, Nobuaki
Journal of Nuclear Science and Technology, 34(4), p.398 - 401, 1997/04
Times Cited Count：4 Percentile：37.89(Nuclear Science & Technology)no abstracts in English
Co,
Sr,
Cs,Np and Am on soil under coexistence of humic acid; Effects of molecular size of humic acidTanaka, Tadao;
Materials Research Society Symposium Proceedings, Vol.353, 0, p.1013 - 1020, 1995/00
no abstracts in English
Kozai, Naofumi; Onuki, Toshihiko; Muraoka, Susumu
Nihon Genshiryoku Gakkai-Shi, 36(10), p.955 - 957, 1994/00
Times Cited Count：2 Percentile：28.49(Nuclear Science & Technology)no abstracts in English
Kumata, Masahiro; *; ; *; *
JAERI-M 90-179, 21 Pages, 1990/10
no abstracts in English
Pu and 
Pu with Np targetsIzumo, Mishiroku; Sorita, Takami; ; Sekine, Toshiaki; Matsuoka, Hiromitsu; Motoki, Ryozo; *
JAERI-M 90-102, 28 Pages, 1990/07
no abstracts in English
Np in spent fuel by use of inherent 
Np as a chemical yield monitorShinohara, Nobuo; Kono, Nobuaki; ; Usuda, Shigekazu
Journal of Radioanalytical and Nuclear Chemistry, 130(1), p.3 - 12, 1989/00
Times Cited Count：4 Percentile：49.53(Chemistry, Analytical)no abstracts in English
Np in spent nuclear fuel using anion-exchange porous polymeric filterAsai, Shiho; Hanzawa, Yukiko; Konda, Miki; Suzuki, Daisuke; Magara, Masaaki; Kimura, Takaumi; Ishihara, Ryo*; Saito, Kyoichi*; Yamada, Shinsuke*; Hirota, Hideyuki*
no journal, ,
no abstracts in English
