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本文研究了锕系元素铀、镎的极谱联合测定。在2mol/l HAc+2mol/l NH_4Ac底液中,U(Ⅵ),Np(Ⅴ)有可逆波,其半波电位为U(Ⅵ)-0.64V(相对汞电极),Np(Ⅴ)-0.95V(相对汞电极);两峰相距0.31V,可以联合测定。此法可应用于氟化物挥发流程、镎回收工艺流程。还研究了电极反应机理,其结果符合Nernest方程和Ilkovich方程,并求得在该底液中电子反应数和扩散系数。
In this paper, the determination of actinides uranium, 镎 polarographic determination. The reversible waves of U (Ⅵ) and Np (Ⅴ) were found in 2 mol / l HAc + 2 mol / l NH_4Ac bottom solution. The half wave potential was U (Ⅵ) -0.64 V (opposite mercury electrode) 0.95V (relative mercury electrode); two peaks separated by 0.31V, can be jointly measured. This method can be applied to the fluoride volatilization process, 镎 recycling process. The electrode reaction mechanism was also studied. The results are in agreement with the Nernest equation and the Ilkovich equation, and the number of electron reactions and the diffusion coefficient in the bottom solution are obtained.