▎ 摘　　要

NOVELTY - Preparation of high selectivity chlorsulfuron magnetic molecularly imprinted polymer involves using modified Hummers method to form dried graphene oxide, and using co-precipitation method to form magnetic graphene oxide. USE - Preparation of high selectivity chlorsulfuron magnetic molecularly imprinted polymer used as adsorbent for identification, high-efficiency separation and enrichment of sulfonylurea herbicide residues in cereal samples under condition of external magnetic field (claimed). ADVANTAGE - The method does not requires the introduction of bio-toxic cross-linking agents and initiators, and is environmentally friendly when compared with existing molecularly imprinted polymer, recognizes the magnetic properties of the resulting molecularly imprinted polymers which has high adsorption capacity, and speed desorption rate and equilibrium time for chlorsulfuron, is recyclable several times, and reduces the detection cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for usage of the chlorsulfuron magnetic molecularly imprinted polymer, which involves using molecularly imprinted polymer for adsorbent to recognize chlorsulfuron molecules and separating by means of oscillation adsorption and magnetic separation.