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Behavior of lanthanides and actinides for their mutual separation using extractant and masking agent

抽出剤とマスキング剤を利用したランタノイド、アクチノイド相互分離における挙動

佐々木 祐二  ; 森田 圭介 ; 松宮 正彦*; 中瀬 正彦*

Sasaki, Yuji; Morita, Keisuke; Matsumiya, Masahiko*; Nakase, Masahiko*

抽出剤とマスキング剤を併用する溶媒抽出系で、アクチノイド-ランタノイド、及びAm-Cm分離を検討した。それぞれ分離比はNd/Amでおよそ10、Cm/Amで3程度であった。それぞれの結果を用いて、最適分離系での多段抽出法における金属濃度プロファイルを求め、実験結果評価に役立てた。

We attempted to separate An from Ln, and Am and Cm by the system including extractant and masking agent. The separation factor of Nd and Am was approximately 10 by TODGA-DTPA-BA and that of Am and Cm was over 3 by TODGA-DOODA(C2). Using these batch data, profiles of metal concentration with multi-step extractions proposed in this manuscript were demonstrated.

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