Voltammetric Determination of Vitamin B6 at Glassy Carbon Electrode Modified with Gold Nanoparticles and Multi-Walled Carbon Nanotubes

Yuzhong Zhang, Yuehong Wang

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DOI: 10.4236/ajac.2011.22022                

Abstract

In this work, the gold nanoparticles (Au NPs)/multi-walled carbon nanotubes (MWCNTs) composite film modified glassy carbon electrode (GCE) was fabricated, and scanning electron microscopy (SEM) was used to investigate the assemble process of the composite film. In pH 7.0 PBS, a oxidation peak of the vitamin B6 (VB6) was only observed at composite film modified electrode. Under the optimized conditions, the current intensity was linear with the concentrations of VB6 in the range of 1.59 to 102.74 μg●mL^–1 with a detection limit of 0.53 μg●mL^–1 (S/N = 3). The modified electrode had been applied in medication analysis, and obtained good results.

Keywords

Vitamin B6, Gold Nanoparticles, Multi-Walled Carbon Nanotubes, Differential Pulse Voltammetry

Conflicts of Interest

The authors declare no conflicts of interest.

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