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Electrocatalytic Determination of Histamine on a Nickel-Film Glassy Carbon Electrode

✍ Scribed by Jaroslava Švarc-Gajić; Zorica Stojanović

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
329 KB
Volume
22
Category
Article
ISSN
1040-0397

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✦ Synopsis

Abstract

The electrocatalysed oxidation of histamine on a thin film nickel electrode was investigated for the purpose of its chronopotentiometric determination. The oxidation mechanism implies complex and combined processes of histamine physical adsorption and consequent oxidation via joined oxidation potency of a constant current and electrochemically generated nickel‐oxihydroxide, which played a role of an electron transfer catalyst. Experimental parameters affecting the oxidation process, including type and concentration of supporting electrolyte, initial potential, oxidation current, temperature and concentration time, were optimised. Using a 240 s accumulation time, limit of detection and quantitation were 0.11 mg L^−1^ and 0.29 mg L^−1^ of histamine, respectively.

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