A new voltammetric sensor based on poly(L-arginine)/graphene-Nafion composite film modified electrode for sensitive determination of Terbutaline sulfate

► A novel sensor based on graphene-Nafion and poly(L-arginine) was constructed. ► Electrochemical properties of Terbutaline sulfate were investigated. ► The sensor showed a significant voltammetric response to Terbutaline sulfate. ► This work promoted the applications of graphene in electrochemical sensors.