The Determination of Dismutation Rate Constant of Superoxide Ion Catalyzed by SOD Model Compound with Tast Polarography

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (11): 1444.

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The Determination of Dismutation Rate Constant of Superoxide Ion Catalyzed by SOD Model Compound with Tast Polarography

JIANG Yi-Qin, LIU Wan-Qiao, TANG Kai-Qing, LIAO Zhan-Ru, CHEN Pei-Ling, SHI Ju-En

Department of Chemistry, Huazhong Normal University, Wuhan, 430070

Received:1992-01-04 Revised:1992-05-23 Online:1992-11-24 Published:1992-11-24

Abstract

Abstract: The SOD model compound-catalyzed dismutation reaction of superoxide ion O₂^- in aprotic solvent has been studied by tast polarography.Asimplified function is made to replace the exact solution of the kinetic differential equantion with error less than 1%.The catalytic dismutation rate constant k₁ is determined by the measurement of the ratio between the catalytic and diffusional current as a function of SOD model compound concentration and the drop time of dropping mercury electrode.

Key words: Tast polarography, Superoxide ion, Superoxide dismutase, SOD model compound, Catalyzed-dismutation rate constant

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JIANG Yi-Qin, LIU Wan-Qiao, TANG Kai-Qing, LIAO Zhan-Ru, CHEN Pei-Ling, SHI Ju-En . The Determination of Dismutation Rate Constant of Superoxide Ion Catalyzed by SOD Model Compound with Tast Polarography[J]. Chem. J. Chinese Universities, 1992, 13(11): 1444.

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The Determination of Dismutation Rate Constant of Superoxide Ion Catalyzed by SOD Model Compound with Tast Polarography

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