Simultaneous electrochemical determination of ascorbic acid, dopamine and uric acid using poly (tyrosine)/functionalized multi-walled carbon nanotubes composite film modified electrode

► A novel electrochemical sensor based on poly (tyrosine)/functionalized multi-walled carbon nanotubes composite film ► Simultaneous determination of ascorbic acid, dopamine and uric acid using this sensor ► The modified electrode has good stability, sensitivity and selectivity. ► The proposed method can be used in research assays and clinical diagnosis.