Electrocatalytic Oxidation and Trace Determination of Catecholamine Neurotransmitters at Osmium Complex Polymer and Nafion Duallayer Membrane Carbonbase Electrode

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (2): 224.

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Electrocatalytic Oxidation and Trace Determination of Catecholamine Neurotransmitters at Osmium Complex Polymer and Nafion Duallayer Membrane Carbonbase Electrode

NI Jing-An¹, JU Huang-Xian¹, CHEN Hong-Yuan¹, Dnal Leech²

1. Department of Chemistry, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093;
2. Department of Chemistry, National University of Ireland, Galway, Ireland

Received:1998-06-16 Online:1999-02-24 Published:1999-02-24

Abstract

Abstract: The fabrication and electrocatalytic characteristics of osmium complex polymer [Os(bpy)₂(PVP)₁₀Cl]Cl(OsP)orOsP₂N afion duallayer membrane modified carbonbase(glassy carbon or graphite) electrodes were studied. The electrocatalytic behaviour of these modified electrodes to the oxidation of catecholamines(dopamine, epinephrine and norepinephrine) was investigated. The kinetic parameters of these electrocatalytic reactions were obtained. The OsP-Nafion duallayer membrane modified electrodes could eliminate efficiently the interference of ascorbic acid and could be used in quantitative determination of trace catecholamine levels. The modified elecrodes showed excellent sensibility, selectivity and stability.

Key words: Duallayer membrane modified electrodes, Cl, Nafion, Catecholamines, Eletrocatalytical oxidation

CLC Number:

O657.1

TrendMD:

NI Jing-An, JU Huang-Xian, CHEN Hong-Yuan, Dnal Leech . Electrocatalytic Oxidation and Trace Determination of Catecholamine Neurotransmitters at Osmium Complex Polymer and Nafion Duallayer Membrane Carbonbase Electrode[J]. Chem. J. Chinese Universities, 1999, 20(2): 224.

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Electrocatalytic Oxidation and Trace Determination of Catecholamine Neurotransmitters at Osmium Complex Polymer and Nafion Duallayer Membrane Carbonbase Electrode

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