A novel electrochemical biosensor based on hemin functionalized graphene oxide sheets for simultaneous determination of ascorbic acid, dopamine and uric acid

Hemin functionalized graphene oxide (H-GO) was prepared and then a novel electrochemical biosensor was constructed based on H-GO and used for simultaneous determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA) with good selectivity and high sensitivity.