Nanowire Modified Electrode for Sensitive Measurement of Nicotinic Acid

A simple and sensitive method has been developed to measure nicotinic acid using CuGeO3 nanowire modified glassy carbon electrode (GCE). The CuGeO3 nanowires can be attached firmly to the surface of the GCE. The modified GCE exhibits good detection performance for nicotinic acid with the correlation coefficient of 0.993 and 0.985 for cvp1 and cvp2, respectively. The detection limit is 9.2 μM and 0.83 μM, respectively at a signal-to-noise ratio of 3 with the linear range of 0.001–2 mM. The CuGeO3 nanowire modified GCE exhibits good stability and reproducibility.

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