▎ 摘　　要

A novel poly(methylene blue)/graphene composite glassy carbon electrode was fabricated and the electrochemical behavior of maltol at the modified electrode was studied by cyclic voltammetry. In phosphate-buffered solution, the modified electrode exhibited excellent electrocatalytic activity towards the electrochemical oxidation of maltol. Under optimized conditions, the oxidation peak current showed a linear relationship with the concentrations of maltol in the ranges of 8.00 x 10(-7) to 4.00 x 10(-5) and 4.00 x 10(-5) to 5.40 x 10(-4) mol L-1, with a detection limit of 6.50 x 10(-8) mol L-1. The performance of the developed method was validated in terms of linearity (r = 0.9981 and 0.9955), recovery (97.0-99.3 %), reproducibility (relative standard deviations a parts per thousand currency signaEuro parts per thousand 3.1 %, n = 6), and robustness. The method shows excellent sensitivity, selectivity, and reproducibility and has been successfully applied to analyzing maltol in a wide variety of food products.