Simultaneous determination of l-ascorbic acid, dopamine and uric acid with gold nanoparticles-β-cyclodextrin-graphene-modified electrode by square wave voltammetry

► Graphene-β-CD-gold nanoparticles material was synthesized through a green route. ► The material showed excellent electrochemical behavior on oxidation of AA, DA and UA. ► Simultaneous determination of AA, DA and UA was performed by square wave voltammetry. ► UA in human urine sample was detected without pretreatment.