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.
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.
|Keyword(s) / Subject(s):||Keywords: Gold screen-printed electrode; Tetracycline; Chlortetracycline, Oxytetracycline, wall-jet flow-through cell, Amperometric detection|
|School:||Birkbeck Schools and Departments > School of Science > Biological Sciences|
|Date Deposited:||08 Aug 2011 14:06|
|Last Modified:||17 Apr 2013 12:21|
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