摘要
The voltammetric behaviors of rare earth ions-amino acids were studied.The reduction potential of Eu^(3+) was shifted positively and the peak separation of the cathodic and anodic peaks in cyclic voltammogram de- creased when a certain amino acid was added to Eu^(3+) solution.Experimental results showed that Eu^(3+) was re- duced by way of forming complexes with amino acids which were adsorbed on mercury electrode surface.When histidine and formaldehyde existed simultaneously in the solution containing Eu^(3+),a well-defined reversible catalytic prewave of Eu^(3+) was obtained.Meanwhile,the reduction current of formaldehyde increased greatly with the addition of histidine.The mechanism was studied.Several other rare earth ions and amino acids were also studied preliminarily.
The voltammetric behaviors of rare earth ions-amino acids were studied.The reduction potential of Eu^(3+) was shifted positively and the peak separation of the cathodic and anodic peaks in cyclic voltammogram de- creased when a certain amino acid was added to Eu^(3+) solution.Experimental results showed that Eu^(3+) was re- duced by way of forming complexes with amino acids which were adsorbed on mercury electrode surface.When histidine and formaldehyde existed simultaneously in the solution containing Eu^(3+),a well-defined reversible catalytic prewave of Eu^(3+) was obtained.Meanwhile,the reduction current of formaldehyde increased greatly with the addition of histidine.The mechanism was studied.Several other rare earth ions and amino acids were also studied preliminarily.
基金
The project supported by the National Natural Science Foundation of China
