[1B01-03] Isotope Analysis & Separation

[1B03] Chemical Exchange Isotope Separation of Calcium and Lithium via Organic Phase Macrocyclic Crown-Ether.

*Anawat Rittirong¹, Takaaki Yoshimoto¹, Ryuta Hazama¹, Tadafumi Kishimoto², Toshiyuki Fujii², Yoichi Sakuma³, Satoshi Fukutani⁴, Yuji Shibahara⁴, Ayaki Sunaga⁴ (1. Osaka Sangyo Univ., 2. Osaka Univ., 3. Tokyo Tech, 4. Kyoto Univ.)

Keywords:Isotope Separation, Calcium, Lithium, Crown-ether, Enrichment

The optimal conditions for calcium-48 (48Ca) isotope separation and enrichment mass production were investigated using crown-ether liquid-liquid extraction. The advantages of this technique are that it is quick and allows for a high concentration of solution. The results of the liquid-liquid extraction system revealed a significant dependence on the acidity solvent distribution coefficient. The presence of HCl acid enhanced and maintained the formation of the ion-crown complex. The distribution coefficient (D) for calcium in HCl and aqueous solvent was found to be 0.1707±0.0010 and 0.0202±0.0003, respectively.