▎ 摘　　要

NOVELTY - Preparing nano-material modified electrode involves dispersing the graphene oxide/cerium oxide nano-hybrid material in perfluorosulfonic acid aqueous solution in ultrasonic waves, performing ultrasonic dispersion, applying to the surface of the screen-printed electrode by dripping and dry to obtain the nano-material modified screen-printed electrode. USE - Method for preparing nano-material modified electrode. ADVANTAGE - The method enables to preparenano-material modified electrode, which has good linearity, eliminates need for intermediate media and exhibits extremely high sensitivity, excellent reproducibility and stability when detecting these phenolic compounds simultaneously. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for measuring phenolic compounds in water based on a nanomaterial modified electrode, which involves: (A) using nanomaterial modified screen printed electrode as the working electrode, using printed counter electrode as the counter electrode, and using screen printed Ag/AgCl electrode as the reference electrode; (B) using differential pulse stripping voltammetry to optimize the optimal test conditions in the buffer solution; and (C) immersing nanomaterial modified electrode in the mixed solution containing phenolic compounds, and using differential pulse stripping voltammetry under the optimal test conditions detection and determining phenolic compounds in water.