▎ 摘　　要

NOVELTY - The utility model claims a kind of graphene oxide and phytic acid modified electrode and an electrochemical sensor, comprising: a base electrode arranged on substrate electrode surface of the graphene oxide; outer surface of the graphene oxide acid layer set on the Nafion layer outer surface of the acid layer. The electrode sensor as the electrolytic cell, the electrolytic cell comprising: a working electrode, the working electrode is the modified electrode, an auxiliary electrode, a reference electrode, placed in the electrolytic solution of the electrolytic cell and the bottom. The graphene oxide material satisfies the requirement of deep removal of heavy metal ion detection in water. The high electrochemical activity of the electrode material is applied to fast detect heavy metal in the electrochemical sensor, with simple sample processing, low cost, fast speed for detecting the trace heavy metal at the same time and great economic and social benefits by promoting heavy metal pollution detection and processing technology of development after the industrialization.