1. SWCNT-modified carbon paste electrode as an electrochemical sensor for histamine determination in alcoholic beverages.
- Author
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Stojanović, Zorica, Mehmeti, Eda, Kalcher, Kurt, Guzsvány, Valéria, and Stanković, Dalibor
- Abstract
In this work, a simple and rapid electrochemical method is presented for the voltammetric determination of histamine based on carbon paste electrodes bulk-modified with single-walled carbon nanotubes. As monitored in cyclic voltammetry histamine undergoes an irreversible electrochemical oxidation with a peak potential of ca. +1.25 V (vs. Ag/AgCl, 3 mol L KCl) in phosphate buffer solution (PBS, 0.1 mol L, pH 6.0). At optimized differential pulse voltammetric parameters, the current response of histamine was linearly proportional to its concentration in the range from 4.5 to 720 μmol L. A low limit of detection of 1.26 μmol L and a limit of quantification of 3.78 μmol L of histamine, as well as good reproducibility (RSD = 0.48-3.40 %) were obtained using the carbon paste electrode modified with single-walled carbon nanotubes. The proposed sensor was successfully applied to the determination of histamine in commercial beer and wine samples. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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