Electrochemical Studies on the Heavy Lanthanide Complexes

Pak, Chong Min; 박종민; Kim, Chae Kyun; 김재균; Son, Byung Chan; 손병찬

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.5, No.3

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Electrochemical Studies on the Heavy Lanthanide Complexes

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1992, v.5 no.3, pp.249-261

Pak, Chong Min
Kim, Chae Kyun
Son, Byung Chan

Pak, C. M., Kim, C. K., & Son, B. C. (1992). Electrochemical Studies on the Heavy Lanthanide Complexes. , 5(3), 249-261.

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Abstract

Electrochemical behavior of the heavy lanthanide complexes of alizarin red S(ARS) has been investigated by d. c. polarography, differential pulse polarography and cyclic voltammetry. The reduction mechanism at a mercury electrode of alizarin red S as a complexing ligand showed a one step of two-electron transfer and the electron process is found to be reversible. Alizarin red S forms a 3:1 adsorptive complexes with lanthanides and the complexes are reduced via one step of two-elctron. The reduction potential of complex wave($P_2$) shifted more negatively than the ligand wave($P_1$). The linear calibration curves of the decreacing $P_1$ and increasing $P_2$ is obtained when the lanthanide concentration varies from $2.0{\times}10^{-6}M$ to $6.4{\times}10^{-5}M$ under the condition of pH 9.5, 0.1M LiCl and $1{\times}10^{-3}M$ ARS.