▎ 摘　　要

NOVELTY - Fulvic acid modified magnetic graphene nano-composite material is claimed. The composite material is composed of graphene oxide and/or reduced graphene oxide which are attached. USE - The nano-composite material is useful as aflatoxin adsorption remover in edible vegetable oil (claimed). ADVANTAGE - The nano-composite material has simple operation, and low cost. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing fulvic acid modified magnetic graphene nano-composite material comprising (i) adding fulvic acid into aqueous graphene oxide solution at room temperature, stirring or sonicating to obtain fulvic acid/graphene oxide solution, and (ii) adding aqueous solution of ferric chloride into aqueous solution of sodium bicarbonate at room temperature, stirring to obtain iron floc, and adding aqueous solution of ascorbic acid, and stirring, adding fulvic acid/graphene oxide solution and stirring, transferring solution to hydrothermal reaction in reaction vessel, and collecting black precipitate by centrifugation, washing and drying to obtain black powder to obtain fulvic acid-modified magnetic graphene nanocomposite material; and (2) use of fulvic acid-modified magnetic graphene nanocomposite material as aflatoxin adsorption remover in edible vegetable oil comprising dispersing fulvic acid-modified magnetic graphene nanocomposite in edible vegetable oil diluted with n-hexane to be sufficiently contacted for adsorption and removal of aflatoxin, and magnetically separating oil and adsorbent.