▎ 摘　　要

NOVELTY - Surface molecularly imprinted graphene monolithic fiber is prepared by (1) ultrasonically dispersing graphene oxide in anhydrous ethanol, allowing mixture to stand under environment without oxygen and water to obtain dispersion 1, mixing silane coupling agent KH570, deionized water, and ethanol, adjusting pH using acetic acid, hydrolyzing KH570 hydrolyzate, activating in oxygen-free environment to obtain dispersion 2, heating dispersion 1 in oil bath, slowly adding dispersion 2 to dispersion 1, centrifugally washing obtained product with ethanol, and drying under vacuum; (2) ultrasonically dispersing obtained silane-functionalized graphene oxide in N,N-dimethylformamide, adding acrylamide and organic phosphate, mixing ultrasonically, adding crosslinker ethylene glycol dimethacrylate and azobisisobutyronitrile, and ultrasonically mixing; and (3) placing cut quartz capillary in methanol solution for activation and removing template molecule and unreacted reagent. USE - Preparation of surface molecularly imprinted graphene monolithic fiber for selective extraction analysis of organophosphates (claimed). ADVANTAGE - The monolithic fiber preparation process is simple, and the surface molecularly imprinted graphene monolithic fiber has large adsorption capacity, good reproducibility, high recovery rate, thermal stability, and chemical stability. DETAILED DESCRIPTION - Surface molecularly imprinted graphene monolithic fiber is prepared by (1) ultrasonically dispersing graphene oxide in anhydrous ethanol, allowing mixture to stand under environment without oxygen and water to obtain dispersion 1, mixing silane coupling agent KH570, deionized water, and ethanol, adjusting pH using acetic acid, hydrolyzing to obtain KH570 hydrolyzate, activating in oxygen-free environment to obtain dispersion 2, heating dispersion 1 in oil bath, slowly adding dispersion 2 to dispersion 1, carrying out synthesis reaction under constant heating temperature conditions, centrifugally washing obtained product with ethanol, and drying under vacuum to obtain silane-functionalized graphene oxide; (2) ultrasonically dispersing silane-functionalized graphene oxide in N,N-dimethylformamide (DMF) to obtain dispersion, adding acrylamide and organic phosphate, mixing ultrasonically, adding crosslinker ethylene glycol dimethacrylate (EGDMA) and azobisisobutyronitrile (AIBN), and ultrasonically mixing to obtain surface molecularly imprinted graphene monolithic fiber; and (3) placing cut quartz capillary in a methanol solution for activation, washing, and drying, blowing off prepolymerized liquid nitrogen by oxygen, injecting into quartz capillary pretreated with methanol, sealing at both ends, removing a portion of outer wall of capillary, removing template molecule and unreacted reagent by using an eluent, washing and drying with methanol to obtain a molecularly imprinted graphene monolithic fiber on the surface of organic phosphate. An INDEPENDENT CLAIM is included for application of surface molecularly imprinted graphene monolithic fibers in selective extraction analysis of organophosphates.