Dbを模擬した5族元素Nb並びにTaのオンライン等温ガスクロマトグラフ挙動

On-line isothermal gas chromatographic behavior of group 5 elements Nb and Ta as homologues of Db

佐藤 哲也   ; 塚田 和明  ; 浅井 雅人  ; 豊嶋 厚史; 笠松 良崇*; Li, Z.; 佐藤 望; 菊池 貴宏; 永目 諭一郎 

Sato, Tetsuya; Tsukada, Kazuaki; Asai, Masato; Toyoshima, Atsushi; Kasamatsu, Yoshitaka*; Li, Z.; Sato, Nozomi; Kikuchi, Takahiro; Nagame, Yuichiro

超アクチノイド元素Dbの模擬として、5族元素Nb及びTaの短寿命核種を用い、これらの等温ガスクロマトグラフ挙動を調べた。オキシ塩化物生成が見込まれる条件下でのTa揮発性化合物の分離挙動は本研究で初めて観測され、その揮発性はNbに比べて低いことがわかった。

To investigate chemical properties of the transactinide element dubnium (Db, Z=105), we have developed an on-line isothermal gas chromatographic apparatus. The on-line experiments with the group-5 elements using the short lived Nb and Ta as the homologues of Db were conducted. We measured the relative chemical yields of volatile compounds of Nb and Ta as a function of the isothermal temperature in chlorinating condition with mixture of air and the SOCl vapor. It was found that the volatility of compounds of Ta is lower than that of Nb.