▎ 摘　　要

This work describes for the first time the use of mesoporous tin oxide-functionalized reduced graphene oxide (SnO2-rGO) as electrode modifier in combination with differential pulse voltammetry techniques for preconcentration and detection of guaiacol in red wine samples. SnO2-rGO was prepared through in situ growth of SnO2 particles on the rGO surface using cetyltrimethylammonium bromide as the structure-directing agent. Using the best set of experimental conditions, a linear response for guaiacol in the concentration range of 0.05 to 60M with a limit of detection of 7.2nM (signal-to-noise ratio=3) was obtained. Finally, the method was successfully applied to determine guaiacol in red wine samples, and the contents closely corresponded to those obtained by the reported chromatographic method.