Development of an automated electrolytic apparatus for studying chemical properties element 113

• Project/Area Number: 25790085
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: TOYOSHIMA Atsushi 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究副主幹 (40414578)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2015: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 超重元素 / 溶媒抽出 / 電解反応 / 溶液化学 / フロー電解法 / 連続溶媒抽出 / 連続液体シンチレーション測定 / フローインジェクション分析 / オンライン液体シンチレーション測定

Outline of Final Research Achievements

In the present study, an on-line solvent extraction apparatus and a liquid scintillation counting system based on flow injection analysis was newly developed to study chemical properties such as redox potentials and complex formation of superheavy element, element 113 (E113). Combining the developed solvent extraction apparatus with an on-line dissolution unit which had been already developed, extraction experiments of a short-lived molybdenum isotope was successfully carried out. Oxidation experiments of manganese were also performed using a flow electrolytic apparatus. Results showed that a tracer amount of manganese is specifically adsorbed on the electrode, which would be possibly used to determine the oxidation potential of E113.

Research Products

• [Int'l Joint Research] GSI重イオン研究所/マインツ大学(ドイツ)
• [Int'l Joint Research] オスロ大学(ノルウェー)
• [Presentation] Electrochemistry of the heaviest elements at JAEA (2015)
  • Author(s): A. Toyoshima
  • Organizer: The International chemical congress of pacific basin societies 2015
  • Place of Presentation: Honolulu (United States)
  • Year and Date: 2015-12-14
  • Int'l Joint Research / Invited
• [Presentation] Extraction behavior of Mo and W from H2SO4 with Aliquat336 as homologues of seaborgium (Sg) (2015)
  • Author(s): A. Mitsukai, A. Toyoshima, M. Asai, K. Tsukada, T.K. Sato, Y. Kaneya, S. Takeda, Y. Nagame, M. Schaedel, Y. Komori, M. Murakami, H. Haba, K. Ooe, D. Sato, N. Goto, S. Tsuto
  • Organizer: The International Chemical Congress of Pacific Basin Societies 2015 (Pacifichem2015)
  • Place of Presentation: Honolulu (United States)
  • Year and Date: 2015-12-14
  • Int'l Joint Research
• [Presentation] Developments towards aqueous phase chemistry of heavier transactinide elements (2015)
  • Author(s): A. Toyoshima, K. Ooe, M. Asai, M.F. Attallah, N.S. Gupta, H. Haba, Y. Kasamatsu, Y. Kitatsuji, Y. Komori, J. V. Kratz, H. V. Lerum, A. Mitsukai, S. Miyashita, V. Pershina, D. Sato, T. K. Sato, Y. Shigekawa, A. Shinohara, K. Tsukada, A. Vascon, T. Yokokita, A. Yokoyama, J. P. Omtvedt, Y. Nagame, M. Schaedel
  • Organizer: The 5th International Conference on the Chemistry and Physics of the Transactinide Elements (TAN15)
  • Place of Presentation: Urabandai Royal Hotel (Urabandai, Fukushima)
  • Year and Date: 2015-05-25
  • Int'l Joint Research
• [Presentation] Extraction and reduction experiments of Mo and W as a model of reduction studies of seaborgium (Sg) (2014)
  • Author(s): A. Toyoshima et al.
  • Organizer: Radchem2014
  • Place of Presentation: チェコ共和国、マリアンスケラズニェ
  • Year and Date: 2014-05-11 – 2014-05-16