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Segawa, Mariko; Toh, Yosuke; Kai, Tetsuya; Kimura, Atsushi; Nakamura, Shoji
Annals of Nuclear Energy, 167, p.108828_1 - 108828_5, 2022/03
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)Haraga, Tomoko; Saito, Shingo*
Bunseki Kagaku, 70(12), p.671 - 679, 2021/12
We developed highly sensitive capillary electrophoresis-laser-induced fluorescence detection methods for lanthanide (Ln) and actinide (An) ions with small sample volume and low emission of waste, by which the radiation risk can be minimized. Specifically, determination of Nd ion in spent nuclear fuel, effective separation between Am and Cm ion, and specific detection of UO
in real radioactive samples were achieved by molecular design of fluorescence probes composed of an aminocarboxylate chelating moiety, a fluorophore and a spacer, and unique separation mode based on dynamic ternary complexation. We found that there are appropriate combination of probe and ternary complexation for detection and separation of each Ln and An ions. For example, acyclic and macrocyclic hexadentate is suitable for Ln
, Am and Cm, and planer tetradentate with 
electron system is specific for UO, with ppt-sub ppt level detection.
Yamamoto, Masahiko; Karo, Yoshinori*; Kodaka, Noriyasu; Kuno, Takehiko
JAEA-Technology 2019-014, 68 Pages, 2019/10
JAEA-Technology-2019-014.pdf:2.93MB
Analytical devices like syringe pump, electric burette, fraction collector, and electric valve have been controlled by the program written with Visual Basic for Applications (VBA Macro) to automate the column separation of radioactive sample measurement. It is found that VBA Macro can control each device. Therefore, automatic conditioning and separation equipment were made by combining each device and sequentially controlling with the program. The automation conditioning equipment can repeatedly perform conditioning operation with maximum of 8 columns. The automation separation equipment can separate and recover Sr in simulated highly active liquid waste by using Eichrom Technologies Sr resin. It is found that the developed automation method, using commercially available VBA Macro, is effective to reduce labor work, operator's radiation exposure, and to prevent operational error of analysis, together with reducing the cost of automation.
; ; ; *
Shitsuryo Bunseki, 21(1), p.27 - 35, 1973/01
no abstracts in English
Yamamoto, Masahiko; Kuno, Takehiko; Takamura, Yuzuru*
no journal, ,
Target elements are separated and measured in a glove box (GB) to prevent internal exposure when radioactive material is analyzed. Although liquid-liquid solvent extraction is used for the separation, liquid waste reduction is required due to the organic solvents. Also, an large apparatus such as ICP-OES requires high cost due to the designing sepcific GB for installation. Therefore, small apparatus is desired. In this study, we have been focused on microchemical chip (MCC) and liquid electrode plasma (LEP). Reduction of liquid radioactive waste is expected becuase solvent extraction can be performed in microchannel by using MCC. The emission spectroscopy using LEP (LEP-OES) requires neither plasma gas nor cooling water, and the device is small enough to installed in normal GB. We will report the results of the Pu measurement system combining MCC with liquid scintillation counter, and elemental analysis of liquid radioactive waste by LEP-OES.
