| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Outline of Final Research Achievements |
The solvent extraction behavior of zirconium (Zr) and hafnium (Hf) with chelating agents was investigated as model experiments for element 104, rutherfordium (Rf). 2-Furoyltrifluoroacetone (HFTA) which showed faster extraction kinetics was used as extractant. Extraction mechanism for Zr and Hf with HFTA was investigated by a batch method. The results showed that extracted species would be Zr(FTA)4 and Hf(FTA)4. For acceleration of extraction reaction toward experiments with short-lived Rf, extraction of Zr and Hf with a rapid extraction apparatus using a flow injection analysis technique was conducted. At increased temperature (45°C), the results showed that extraction equilibrium of Zr and Hf with HFTA using the FIA apparatus was attained in 30 s. This is a promising result for study of complex formation of short-lived 261Rf (T1/2 = 68 s) isotope with chelating agents.
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