▎ 摘　　要

A new modified electrode was prepared by dropping graphene oxide (GO) and multi-walled carbon nanotuble (MWCNT) nanocomposite on carbon ionic liquid electrode (CILE) surface, which was denoted as GO-MWCNT/CILE and further developed to establish electrochemical method for detecting rutin. Scanning election microscopy, cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the performance of GO-MWCNT/CILE. As compared with that of MWCNT/CILE, GO/CILE and the bare CILE, the redox peak currents of rutin on GO-MWCNT/CILE increased, which was ascribed to the large surface area and good electron transfer performance of GO-MWCNT nanocomposite on the electrode surface. At GO-MWCNT/CILE the oxidation peak currents of rutin increased proportional to the concentration within the range of 0.08 similar to 80.0 mu mol L-1 accompanied by the detection limit of 0.02 mu mol L-1 (3 sigma). Furthermore, the analytical application of the present approach for rutin tablets was evaluated with good sensitivity and acceptable recoveries.