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Electrochemical reduction of mendelevium in HCl solution

Toyoshima, Atsushi; Oe, Kazuhiro; Li, Z.*; Asai, Masato ; Sato, Nozomi; Sato, Tetsuya  ; Kikuchi, Takahiro; Kaneya, Yusuke*; Kitatsuji, Yoshihiro ; Tsukada, Kazuaki ; Nagame, Yuichiro; Sch$"a$del, M.; Kasamatsu, Yoshitaka*; Kogama, Yuka*; Shinohara, Atsushi*; Haba, Hiromitsu*; Even, J.*

Electrochemical study of mendelevium (Md) with flow electrolytic column chromatography is presented. The $$^{255}$$Md isotope was produced in the $$^{248}$$Cm($$^{11}$$B, 4$${it n}$$) reaction at the JAEA tandem accelerator. In applying a negative voltage on the column electrode, Md was eluted with 0.1 M HCl. This behavior is quite similar to that of Sr$$^{2+}$$ and Eu$$^{2+}$$, clearly indicating that most stable Md$$^{3+}$$ is reduced to Md$$^{2}+$$. We determined the redox potential of Md to be approximately -0.18 V versus a standard hydrogen electrode.



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