Preparation method and use of molecular imprinting-absorbing extraction stirring rod

The invention belongs to the technical field of sample pretreatment in analytical chemistry and relates to a preparation method and use of a molecular imprinting-absorbing extraction stirring rod. The preparation process of the method comprises the following steps: sintering one end of a capillary glass tube serving as a substrate of the stirring rod, and subjecting to the sintered capillary glass tube to acid and alkali treatment and surface modification by a silylating agent respectively; performing the self-assembly of template molecules and bifunctional monomers in a polymer solvent, adding a crosslinker and an initiator in the solution, plugging the modified capillary glass tube into the solution; drawing the capillary glass tube out; repeatedly coating the capillary glass tube to a required thickness, and aging the coating; cutting a proper length of coated capillary glass tube, putting the length of coated capillary glass tube in a magnetic core, and sintering the capillary glass tube for end sealing; and eluting the template molecules. The molecular imprinting-absorbing extraction stirring rod prepared by the invention can selectively separate and enrich a trace amount of template molecules and analogues at the same time and is suitable for selectively separating, enriching and analyzing a trace amount of template molecules and analogues in complex samples in terms of organism, food and environment.