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The determination of tetracycline residues in food using a disposable screen-printed gold electrode (SPGE)

Masawat, P. and Slater, Jonathan M. (2007) The determination of tetracycline residues in food using a disposable screen-printed gold electrode (SPGE). Sensors and Actuators B: Chemical 124 (1), 127 - 132. ISSN 0925-4005.

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Official URL: http://dx.doi.org/10.1016/j.snb.2006.12.010

Abstract

The electrochemical analysis of tetracyclines was investigated using a gold screen-printed electrode by cyclic voltammetry and flow injection analysis with dc amperometry. Cyclic voltammetry was used to study the electrochemical oxidation of tetracyclines. For all the tetracyclines investigated a well-defined cyclic voltammogram providing the highest peak current, at 1.2 V versus Ag/AgCl, was obtained when using potassium dihydrogen phosphate solution at pH 2. Flow injection analysis with dc amperometry using the specially fabricated wall-jet flow-through cell was also studied. Under amperometric conditions (Eapp = 1.2 V; flow rate = 2.0 mL min−1), analytical calibration graphs for tetracycline, chlortetracycline and oxytetracycline were obtained from 1 to 500, 5 to 50 and 1 to 500 μmol L−1 with detection limits of 0.96, 0.58 and 0.35 μmol L−1, respectively. The proposed method was successfully applied to the determination of tetracycline, chlortetracycline and oxytetracycline in pharmaceutical products and foods.

Item Type: Article
Keyword(s) / Subject(s): Keywords: Gold screen-printed electrode; Tetracycline; Chlortetracycline, Oxytetracycline, wall-jet flow-through cell, Amperometric detection
School or Research Centre: Birkbeck Schools and Research Centres > School of Science > Biological Sciences
Depositing User: Administrator
Date Deposited: 08 Aug 2011 14:06
Last Modified: 17 Apr 2013 12:21
URI: http://eprints.bbk.ac.uk/id/eprint/3966

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