Studies on electroanalytical chemistry of rare earth elements IX: The polarographic adsorptive complex wave of terbium-oxine-sodium perchlorate.

Abstract

In this paper the polarographic behavior of terbium-oxine(Ox)- sodium perchlorate system has been studied. In the solution of NaClO4, Ox has a well defined single-sweep polarographic wave P1. After the addition of Tb3+ a new wave P2 appears at more negative potential. A linear calibration curve of the decrease of P1 is obtained in Tb3+ concentration range from 1.0X10-6M to 1.0X10-5M under the optimun conditions of pH4.0-4.5, 0.1M NaClO4-8X10-5M Ox. The wave height of P2 increases linearly with Tb3+ concentration from 3.0X10-6M to 3.0X10-5M in 0.1M NaClO4-2.0X10-4M Ox. It has been shown by applying a number of polarographic techniques that the wave is an adsorptive complex wave. We proposed the reduction processes of the complex and determined the dissocation constants of Ox.

Key words: OSCILLOSCOPIC POLAROGRAPHY, SODIUM COMPOUNDS, POLAROGRAPHIC ANALYSIS, PERCHLORATE, RARE ELEMENT, ELECTROCHEMICAL ANALYSIS, TERBIUM, HYDROXY QUINOLINES

CLC Number:

O657

Cite this article

JIAO KUI;GAO XIAOXIA. Studies on electroanalytical chemistry of rare earth elements IX: The polarographic adsorptive complex wave of terbium-oxine-sodium perchlorate.[J]. Acta Chimica Sinica, 1983, 41(3): 222-228.

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