▎ 摘　　要

This paper presents a thermally reduced graphene/clay/chitosan modified pencil electrode for ultrasensitive detection of Flubendiamide using differential pulse voltammetry. The graphene oxide was synthesized by exfoliation of graphite with an eco-friendly procedure. The as-produced reduced graphene/clay/chitosan com-posite is characterized by utilizing Fourier transform infrared spectroscopy and Scanning electron microscopy. The electrochemical behavior of the electrode before and after modification was investigated by cyclic vol-tammetry. Under optimized conditions, the reduced graphene/clay/chitosan modified pencil electrode exhibited excellent analytical properties toward Flubendiamide determination using differential pulse voltammetry. A linear calibration curve was established from 0.02 to 15 mu mol L-1 for Flubendiamide with a limit of detection of 0.001 mu mol L-1. The method was effectively employed for Flubendiamide detection in white rice samples.