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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.
Kodaka, Noriyasu; Yamamoto, Masahiko; Kuno, Takehiko; Takamura, Yuzuru*
no journal, ,
The K, Ca, Mg, Na, Fe, Cr, and Ni in plutonium (Pu) nitrate solution were determined by liquid electrode plasma optical emission spectrometry (LEP-OES). Since the emission line of Pu interfered the emission line of the target element in ICP-OES, removal of Pu was necessary in advance to the measurement. Contrastly, Pu emission lines were not observed, when Pu nitrate solution was measured by LEP-OES. However, emission of K, Ca, Mg, Na, Fe, Cr, and Ni was observed. Therefore each element were determined. It was found that trace elements in Pu nitrate solution can be quantified by LEP-OES without the Pu separation.
Saegusa, Yu; Kodaka, Noriyasu; Yamamoto, Masahiko; Horigome, Kazushi; Inada, Satoshi; Kuno, Takehiko
no journal, ,
Iodine-129 (
I), which is a long-lived radionuclide, has high analytical needs for trace concentrations in gaseous and liquid radioactive waste to evaluate the environmental impact of treatment and disposal. However, conventional analytical methods such as gamma ray spectrometry, liquid scintillation counter, and inductively coupled plasma mass spectrometry (ICP-MS) are difficult to apply due to measurement sensitivity and isobaric interference. In this study, we have been developed analytical method for I by ICP-MS with collision reaction cell technique. Reaction gas has been introduced into the collision reaction cell and isobaric ion has been eliminated. In this presentation, the measurement results of I in the iodine adsorption filter collected from the liquid waste treatment facility of Tokai Reprocessing Plant is reported.
Saegusa, Yu; Kodaka, Noriyasu; Yamamoto, Masahiko; Horigome, Kazushi; Inada, Satoshi; Kuno, Takehiko
no journal, ,
Determination of iodine-129, in sample of reprocessing process has high priority to evaluate the environmental impact at treatment and disposal of radioactive solid wastes. In this study, we have been developed analytical method for iodine-129 by ICP-MS with collision reaction cell technique. Oxygen gas has been introduced into the collision reaction cell and isobaric ion, xenon-129, has been eliminated. In this presentation, optimized oxygen gas flow rate, analytical performance, and the measurement results of iodine-129 in the iodine adsorption filter collected from the liquid waste treatment facility in Tokai Reprocessing Plant are reported.