プルトニウムの体外排出に向けたキレート剤による除染に関する基礎検討：X線吸収分光法によるプルトニウム模擬元素とキレート剤との結合性評価

上原 章寛; 鮮 樹輝; 佐藤 遼太朗; 松村 大樹; 辻 卓也; 薬丸 晴子; 城 鮎美; 齋藤 寛之; 田中 泉; 石原 弘; 武田(本間) 志乃

doi:10.57415/xshinpo.53.0_223

Analytical Application

Fundamental Study for Decorporation of Plutonium by Chelating Agents: Coordination Analyses of Simulated Plutonium with Chelating Agents by X-ray Absorption Spectroscopy

Akihiro UEHARA, Xian SHUHUI, Ryotaro SATO, Daiju MATSUMURA, Takuya TSUJI, Haruko YAKUMARU, Ayumi SHIRO, Hiroyuki SAITOH, Izumi TANAKA, Hiroshi ISHIHARA, Shino HOMMA-TAKEDA

Author information

Akihiro UEHARA
National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology
Xian SHUHUI
National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology
Faculty of Science, Chiba University
Ryotaro SATO
National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology
Faculty of Science, Chiba University
Daiju MATSUMURA
Materials Sciences Research Center, Japan Atomic Energy Agency
Takuya TSUJI
Materials Sciences Research Center, Japan Atomic Energy Agency
Haruko YAKUMARU
National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology
Ayumi SHIRO
Quantum Beam Science Research Directorate, National Institutes for Quantum Science and Technology
Hiroyuki SAITOH
Quantum Beam Science Research Directorate, National Institutes for Quantum Science and Technology
Izumi TANAKA
National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology
Hiroshi ISHIHARA
National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology
Shino HOMMA-TAKEDA
National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology

Keywords: Plutonium, Zirconium, Decorporation, Chelating Agent, XAFS

JOURNAL FREE ACCESS

2022 Volume 53 Pages 223-229

DOI https://gongyi-jschina-com-cn-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.57415/xshinpo.53.0_223

Details

Abstract

Internal contamination of plutonium in nuclear accidents is of critical concern. In the present study, chemical forms of zirconium (Zr), a simulated plutonium, coordinated with the organic/inorganic ligands as well as decorporation chelating agents were estimated based on X-ray absorption spectroscopy. Chelating agents used were 1-hydroxyethane-1,1-diphosphonic acid (EHBP) and diethylenetriaminepentaacetic acid (DTPA). First coordination sphere of the Zr-EHBP complex, which was octahedral structure, was significantly different from other ligands such as carbonate, phosphate and DTPA. Furthermore, it was found that the Zr-EHBP complex was more stable than Zr-DTPA complex. These findings would be useful for the effective excretion of internal contamination of plutonium.

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