▎ 摘　　要

NOVELTY - An oxidized graphene and phytic acid-modified electrode is prepared by coating a graphene oxide-phytic acid-Nafion (RTM: tetrafluoroethylene copolymer) layer on a glassy carbon electrode, where the graphene oxide-phytic acid-Nafion (RTM: tetrafluoroethylene copolymer) layer is obtained by mixing graphene oxide, phytic acid and Nafion (RTM: tetrafluoroethylene copolymer). USE - Oxidized graphene and phytic acid-modified electrode for sensor, for use in detecting the trace heavy metal ions such as copper, lead, zinc, iron, cobalt, nickel, manganese, cadmium, mercury, tungsten, molybdenum, gold and silver in water. ADVANTAGE - The oxidized graphene and phytic acid-modified electrode can be prepared with high electrochemical activity, and is simple, rapid and cost-effective manner. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing an oxidized graphene and phytic acid-modified electrode (2) a sensor.