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明地 省吾*; 平田 早紀子*; 日下 良二; 本田 匠*; 為国 誠太*; 村松 悟*; 齋藤 健一*; 平尾 岳大*; 灰野 岳晴*; 渡邉 雅之; et al.
no journal, ,
Recently, we have been performing surface-enhanced infrared absorption (SEIRA) spectroscopy of Eu complexes, aiming for clarifying the origin of selectivity of O-donor/N-donor ligands toward lanthanides (Ln)/minor actinides (MA) in radioactive waste treatments. In this study, we improved the SEIRA setup to extend the study to complexes of Am (MA), which is a radioactive nuclide. We made a new sample vessel with smaller internal volume and higher sealing ability, where we successfully reduced the radiation exposure (less than 1 Sv) during the experiment. In the actual measurement of AmDGA complex, the absorption of the C=O stretching of the amide unit was observed at 1621 cm; it is redshifted by 8 cm from the Eu complex, one of the lanthanides, which was supported by theoretical calculations.