Preparation method and application of molecular imprinting electroluminescent sensor for detecting trace veterinary drug residue by taking battery as power

The invention discloses a molecular imprinting electroluminescent sensor for detecting veterinary drug residue by taking a battery as power and a method for detecting veterinary drug residue. A preparation method of an electrode (a schematic diagram is shown in the figure) comprises the following steps of: preparing MIP (Molecularly Imprinted Polymer)s sol of the veterinary drug residue; preparing a carbon dot and preparing a graphene nano material according to documents; and modifying graphene, the carbon dot and the MIPs sol onto the surface of the electrode of the sensor. The method for detecting the trace veterinary drug residue comprises the following steps of: connecting the modified electrode to an electrogenerated chemiluminescence instrument, and detecting the veterinary drug residue in a sample extract by taking the battery as the power. The molecular imprinting electroluminescent sensor disclosed by the invention has the advantages that the specificity of the electrode is strong and the sensitivity is high and can be up to a ng grade; only 3-5 minutes are spent on a basic detection process; and the cost is low. The method for detecting the veterinary drug residue by adopting the electrode is quick and easy to operate, the reaction is automatically completed by instruments and results are automatically recorded by the instruments.