▎ 摘　　要

A new grapherie nanocomposite, CeO2-poly(diallyldimethylammonium chloride)-graphene (CeO2-PDDA-GR), was prepared by an easy and low-cost hydrothermal method. The images of transmission electron microscopy (TEM) showed that well-shaped CeO2 nanoparticles distributed more uniformly on the GR sheets. Based on the CeO2-PDDA-GR composites modified glassy carbon electrode, the electrochemical properties of eriocitrin were investigated in detail and a sensitive determination method was established synchronously. Differential pulse voltammetry (DPV) measurement revealed that the oxidation peak current increased linearly with eriocitrin concentrations in range of 1.0 x 10(-8) mol x 10(-8) mol L-1 with detection limit of 7.0 x 10(-10) mol L-1 (S/N = 3). Moreover, the proposed method was used in determination of eriocitrin in lemon sample with accurate results. (C) 2016 Elsevier B.V. All rights reserved.