Simultaneous determination of ascorbic acid and rutin in pharmaceutical preparations with electrochemical method based on multi-walled carbon nanotubes-chitosan composite film modified electrode

► Simultaneous detection of ascorbic acid and rutin by voltammetry was reported. ► The MWCNTs-CHIT/ABPE for analytical application was reported. ► The peak potential difference between ascorbic acid and rutin was 342 mV. ► Advantages of high sensitivity, extreme simplicity, rapid response and low cost.