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Sequential separation of U, Th, Pb and lanthanides with a single anion-exchange column

単一陰イオン交換カラムを用いたウラン,トリウム,鉛及びランタノイドの逐次分離

宮本 ユタカ; 安田 健一郎; 間柄 正明; 木村 貴海; 臼田 重和*

Miyamoto, Yutaka; Yasuda, Kenichiro; Magara, Masaaki; Kimura, Takaumi; Usuda, Shigekazu*

単一イオン交換カラムと酢酸と塩酸/硝酸の混合溶媒を用いて50ngのウラン,トリウム,鉛そしてランタノイドを逐次分離した。これらの元素は回収率がどれも95%以上で除染係数は100以上であった。この分離技術で特別な試薬や装置を使うことなしに分離にかかる時間を減らし、既存の複雑な分離過程を単純化することができる。

With combination of a single anion-exchange column and mixed-media of CH$$_{3}$$COOH and other acids (HCl and/or HNO$$_{3}$$), 50 ng of U, Th, Pb, and lanthanides were sequentially separated. All of the elements were recovered more than 95%, and the decontamination factor was more than 100. This separation technique reduces separation time and simplified the complicated traditional processes without any special reagents and equipments.

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