▎ 摘　　要

NOVELTY - A heavy metal ion detecting method involves utilizing acidification optimization process, preparing conductive solution and aniline solution, adding graphene oxide powder, dispersing ultrasonically, homogenizing and preparing specific thickness of graphene oxide electrode on the coating device. The graphene oxide electrode is dried in vacuum drying box, cut into 10x 10 mm size, and deposited with polyaniline on the surface as working electrode. The working electrode is placed in the conductive solution containing heavy metal ions, followed by adjusting the pH of the solution and testing. USE - Method for detecting heavy metal ion. ADVANTAGE - The method enables detecting heavy metal ion with detection sensitivity, in simple manner. DETAILED DESCRIPTION - A heavy metal ion detecting method involves utilizing acidification optimization process, preparing conductive solution and aniline solution, adding graphene oxide powder, dispersing ultrasonically, homogenizing and preparing specific thickness of graphene oxide electrode on the coating device. The graphene oxide electrode is dried in vacuum drying box at 60 degrees C, cut into 10x 10 mm size, and deposited with polyaniline on the surface as a working electrode. The working electrode is placed in the conductive solution containing heavy metal ions, followed by adjusting the pH of the solution using strong acid and testing.