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Journal Articles

Preparation of microvolume anion-exchange cartridge for inductively coupled plasma mass spectrometry-based determination of $$^{237}$$Np content in spent nuclear fuel

Asai, 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 ($$^{237}$$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 $$^{237}$$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 $$^{237}$$ Np with ICP-MS. Disks with a volume of 0.08 cm$$^{3}$$ 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 $$^{237}$$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%.

Journal Articles

Correlation between $$^{237}$$Np M$"o$essbauer parameter and crystal structure of neptunyl compounds

Saeki, Masakatsu

Nihon Kessho Gakkai-Shi, 46(6), p.415 - 420, 2004/12

no abstracts in English

Journal Articles

Magnetic properties of some neptunyl(+1) complexes

Nakamoto, Tadahiro*; Nakada, Masami; Nakamura, Akio

Journal of Nuclear Science and Technology, 39(Suppl.3), p.102 - 105, 2002/11

no abstracts in English

Journal Articles

M$"o$ssbauer spectroscopic studies of $$^{237}$$Np in aqueous solutions

Nakada, Masami; Masaki, Nobuyuki; Yamashita, Toshiyuki

Journal of Nuclear Science and Technology, 39(Suppl.3), p.426 - 428, 2002/11

no abstracts in English

Journal Articles

Phase transition of NpO$$_{2}$$ at 25K

Masaki, 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

Journal Articles

Isomeric yield ratios of $$^{134}$$I and $$^{136}$$I in the proton-, $$^{12}$$C- and $$^{19}$$F-induced fission of $$^{235}$$U, $$^{237}$$Np and $$^{238}$$U

Shinohara, 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

Journal Articles

Sorption characteristics of $$^{237}$$Np,$$^{238}$$Pu and $$^{241}$$Am in sedimentary materials

Tanaka, 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

Journal Articles

Coordination chemistry of neptunyl(V) compounds by means of Moessbauer spectroscopy

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

Journal Articles

Experimental study on neptunium migration under in situ geochemical conditions

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

Journal Articles

$$^{237}$$Np Moessbauer spectroscopic study on pentavalent neptunium glycolate complex

Nakamoto, 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

Journal Articles

Preparation of source and sealed absorber holder for $$^{237}$$Np and $$^{238}$$U Moessbauer measurements

Nakada, 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

Journal Articles

Chemical and isotopic characteristics of a neptunium sample for nuclear data measurements

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

Journal Articles

Sorption of $$^{60}$$Co,$$^{85}$$Sr,$$^{137}$$Cs,$$^{237}$$Np and $$^{241}$$Am on soil under coexistence of humic acid; Effects of molecular size of humic acid

Tanaka, Tadao;

Materials Research Society Symposium Proceedings, Vol.353, 0, p.1013 - 1020, 1995/00

no abstracts in English

Journal Articles

Effect of calcium ion on sorption of neptunium by smectite

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

JAEA Reports

Diffusion experiment of a radionuclide in granitic rock cores

Kumata, Masahiro; *; ; *; *

JAERI-M 90-179, 21 Pages, 1990/10

JAERI-M-90-179.pdf:1.27MB

no abstracts in English

JAEA Reports

Production of $$^{237}$$Pu and $$^{236}$$Pu with $$^{237}$$Np targets

Izumo, Mishiroku; Sorita, Takami; ; Sekine, Toshiaki; Matsuoka, Hiromitsu; Motoki, Ryozo; *

JAERI-M 90-102, 28 Pages, 1990/07

JAERI-M-90-102.pdf:0.85MB

no abstracts in English

Journal Articles

Determination of $$^{237}$$Np in spent fuel by use of inherent $$^{239}$$Np as a chemical yield monitor

Shinohara, 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

Oral presentation

Determination of $$^{237}$$Np in spent nuclear fuel using anion-exchange porous polymeric filter

Asai, 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

18 (Records 1-18 displayed on this page)
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