م مقاله کنفرانسی سال ۱۳۹۶ ۵۹۵ مشاهده Simultaneous determination of ascorbic acid, dopamine, paracetamol, and tryptophan with CuxO-ZnO nanoparticles-decorated polypyrrole and reduced graphene oxide modified glassy carbon electrode graphene oxideascorbic aciddopamine