▎ 摘　　要

NOVELTY - A graphene/iron oxide/gold composite material preparing method involves preparing graphene oxide and gold. The graphene oxide is treated ultrasonically for 40 minutes and added to a circle bottom flask, followed by adding ethylene glycol, ferric chloride hexahydrate, sodium citrate, anhydrous sodium acetate, polyethylene glycol and gold and stirring for 30 minutes to obtain mixture. The mixture is reacted in an autoclave at 200 degrees C for 10 hours to obtain reaction product, which is treated with magnet auxiliary agent, and washed with ethanol for 3-5 times to obtain a finished product. USE - Graphene/iron oxide/gold composite material for detecting hydroquinone and catechol (claimed). ADVANTAGE - The material has high electrochemical response, and better detection line and line range. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a use of graphene/iron oxide/gold composite material for detecting hydroquinone and catechol.