Solvent extraction of Zr and Hf from hydrochloric acid using tributylphosphate for the extraction of element 104, rutherfordium
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Y. Kasamatsu
,
Y. Kikutani
Summary
For the solvent extraction experiment on element 104 (Rf), solvent extraction of Zr and Hf as its homologues was performed in tributylphosphate (TBP)/hydrochloric acid (HCl) system using the carrier-free radiotracers 88Zr and 175Hf. Time dependences of the distribution ratios of Zr and Hf were investigated using 6.1 and 10.0M HCl and 0.5 and 2.0M TBP benzene solutions. The distribution ratios in equilibrium were determined for these elements as a function of HCl concentrations in the range of 4.1-10.2M. We found that the neutral chloride complexes of Zr and Hf were formed and extracted into the organic phase within 20 min in HCl with a concentration higher than 6 M. From the results, we propose that solvent extraction of Rf from 4-8M HCl into 2.0M TBP benzene is suitable for investigating the chloride complexation properties of Rf. In addition, for the development of the rapid liquid-liquid extraction apparatus, three types of microchannel devices, namely, a micro reactor, capillary tube and micro-chemical chip, were tested as a mixing-solution part in the apparatus. The chemical reactions of Zr and Hf in the extraction were found to be fast only when using the microchemical chip, which is important for investigations with the 68-s 261Rf.
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Articles in the same Issue
- Preface.
- New trends in nuclear data research for medical radionuclide production
- 68Ge/68Ga production revisited: excitation curves, target preparation and chemical separation – purification
- Cross-section measurements for the formation of manganese-52 and its isolation with a non-hazardous eluent
- Possibilities of preparation of exotic radionuclide samples at PSI for scientific investigations
- Radiochemical separation of 7Be from the cooling water of the neutron spallation source SINQ at PSI
- Solvent extraction of Zr and Hf from hydrochloric acid using tributylphosphate for the extraction of element 104, rutherfordium
- Radioanalytical techniques for the determination of 238U, 226Ra and 210Pb in the environment
- Speciation analysis of 129I and its applications in environmental research
Articles in the same Issue
- Preface.
- New trends in nuclear data research for medical radionuclide production
- 68Ge/68Ga production revisited: excitation curves, target preparation and chemical separation – purification
- Cross-section measurements for the formation of manganese-52 and its isolation with a non-hazardous eluent
- Possibilities of preparation of exotic radionuclide samples at PSI for scientific investigations
- Radiochemical separation of 7Be from the cooling water of the neutron spallation source SINQ at PSI
- Solvent extraction of Zr and Hf from hydrochloric acid using tributylphosphate for the extraction of element 104, rutherfordium
- Radioanalytical techniques for the determination of 238U, 226Ra and 210Pb in the environment
- Speciation analysis of 129I and its applications in environmental research
