Improvement of rapid liquid-liquid extraction apparatus SISAK for redox studies of Sg

Oe, Kazuhiro; Tsukada, Kazuaki  ; Asai, Masato  ; Sato, Tetsuya   ; Toyoshima, Atsushi; Miyashita, Sunao; Nagame, Yuichiro ; Schdel, M.; Kaneya, Yusuke*; Lerum, H. V.*; Omtvedt, J. P.*; Kratz, J. V.*; Haba, Hiromitsu*; Kasamatsu, Yoshitaka*; Shinohara, Atsushi*; Akiyama, Kazuhiko*; Oura, Yasuji*; Yokoyama, Akihiko*; Sueki, Keisuke*

We are planning to investigate the redox potentials of element 106, seaborgium, with a combination of the rapid liquid-liquid extraction apparatus SISAK and a flow electrolytic column. In order to combine these two apparatuses, we need to reduce the liquid flow-rate of the SISAK system. In this study, a new degasser, which works with a lower flow rate, was developed for SISAK. It separates the gas-liquid mixture using a hydrophobic Teflon membrane (only the gas can go through the membrane). Using this new degasser, dissolution efficiencies of gas-jet transported products were measured. At the typical flow rate for the SISAK system (0.4 mL/s), a dissolution efficiency of approximately 80% was obtained. A high yield of around 80% was also observed at a flow rate of 0.1 mL/s with a mixer for the gas-liquid mixing.