Abstract

• Melamine-imprinted electrochemical sensor • Molecularly imprinted polymer • Dairy products supervision • Graphene/ionic liquid compound modification By exchanging the conventional role of functional monomer and template molecules, we develop a new molecularly imprinted nanospheres with grape grain structures based on multi-hydrogen bonding interactions between melamine and 6-aminouracil. Molecular imprinting-electrochemical sensor was established with the assistance of graphene and ionic liquids. The content of melamine in dairy products was detected by the molecular imprinting-electrochemical sensor. The detection limit was determined to be as low as 1.57 × 10 −3 mg kg -1 .

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