▎ 摘　　要

A disposable and sensitive screen-printed electrode constructed with an ink containing graphene was successfully prepared. Owing to the combination of the disposable characteristic of electrode and specific advantages of graphene, the as-prepared electrode demonstrated low background current, fast electron transfer kinetics and wide potential window. Screen-printed graphene electrode (SPG) exhibited excellent electrocatalytic activity in the simultaneous determination of Cd2+ and Pb2+. Moreover, the proposed SPG was also successfully employed for the determination of concentrations of Pb2+ and Cd2+ in Xiangjiang river in China.