The graphene/polyaniline composite is synthesized by using an in situ polymerization procedure,and is characterized by XRD and FTIR.The composite is used to modify bare glass carbon electrode by drop-coating method,then dopamine(DA)is determined utilizing the composite film modified electrode via cyclic voltammetry.The experimental conditions,including the amount of supported electrolyte,pH value and scan rate,are optimized,and a new determination method of DA is established.The results show that the compos...