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Extraction of chromatographic behavior of Rf, Zr, and Hf in HCl solution with styrenedivinylbenzene copolymer resin modified by TOPO (trioctylphosphine oxide)

TOPO修飾樹脂を用いたHCl水溶液中におけるRf, Zr並びにHfの抽出クロマトグラフ挙動

豊嶋 厚史; 笠松 良崇*; 塚田 和明; 浅井 雅人; 石井 康雄; 當銘 勇人*; 西中 一朗; 佐藤 哲也; 永目 諭一郎; Sch$"a$del, M.; 羽場 宏光*; 後藤 真一*; 工藤 久昭*; 秋山 和彦*; 大浦 泰嗣*; 大江 一弘*; 篠原 厚*; 末木 啓介*; Kratz, J. V.*

Toyoshima, Atsushi; Kasamatsu, Yoshitaka*; Tsukada, Kazuaki; Asai, Masato; Ishii, Yasuo; Tome, Hayato*; Nishinaka, Ichiro; Sato, Tetsuya; Nagame, Yuichiro; Sch$"a$del, M.; Haba, Hiromitsu*; Goto, Shinichi*; Kudo, Hisaaki*; Akiyama, Kazuhiko*; Oura, Yasuji*; Oe, Kazuhiro*; Shinohara, Atsushi*; Sueki, Keisuke*; Kratz, J. V.*

本研究では、ラザホージウム(Rf)並びに同族元素Zr, Hfの2.0-7.0M塩酸水溶液からトリオクチルホスフィンオキシド(TOPO)への抽出挙動を調べた。塩酸水溶液の濃度増加に伴ってこれらの元素の抽出率は増加し、その抽出順はZr$$>$$Hf$$geq$$Rfであることを明らかにした。この実験結果から、RfCl$$_{4}$$$$cdot$$2(TOPO)錯体の安定性は同族元素の同じ錯体よりも低いことが考えられる。

The extraction behavior of rutherfordium (Rf) into trioctylphosphine oxide (TOPO) from 2.0 - 7.0 M HCl solution was studied together with that of the homologues Zr and Hf. The extracted yields of Rf, Zr, and Hf increased with an increase of HCl concentration, and the sequence of their extraction was Zr $$>$$ Hf $$geq$$ Rf. It is suggested that the stability of the RfCl$$_{4}$$$$cdot$$2(TOPO) complex is lower than that of the corresponding species of the homologues.

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