▎ 摘　　要

In this study, the electrochemical properties of astilbin were investigated for the first time and an electroanalytical method was established synchronously, which was based on a beta-cyclodextrin-graphene nanocomposite modified electrode (beta-CD-GNs/GCE). The electrode process of astilbin was investigated in detail, and some dynamic parameters were calculated. The detecting sensitivity of astilbin was greatly enhanced at this voltammetric sensor. Under optimum conditions, a lower detection limit (1 x 10(-8) mol L-1) and wider linear range (3.0 x 10(-8) mol L-1 to 2.0 x 10(-6) mol L-1) were achieved by the proposed sensor. Finally, the proposed method was applied to the analysis of a real sample, and the results showed that the method was applicable and reliable.