The Kinetics of Glucose Oxidase Modified Polyaniline Electrode

Abstract

Abstract: The reaction rate-limiting of the glucose oxidase modified polyaniline(PAn/GOD) electrodeis controlled by an unsaturated enzyme kinetics with the rate constant of 1.43×10^-7 m·s^-1.According to the effect of pHon the maximum response current lgi_max of the electrode, the plot of Ig i_max, versus pHshows that two types of ionizing groups are involved in the intermediate of the reaction.The pK_1c and pK_2c are 4.9 and 6.3, respectively.When pK_1c<pH<pK_2c, the glucose oxidase has a high activity.The PAn/GODelectrode still remains a high activity after use of 1200 times and storing for 8 months.

Key words: Polyaniline, Glucose oxidase, Kinetics

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XUE Huai-Guo, MU Shao-Lin. The Kinetics of Glucose Oxidase Modified Polyaniline Electrode[J]. Chem. J. Chinese Universities, 1993, 14(1): 138.

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The Kinetics of Glucose Oxidase Modified Polyaniline Electrode

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