Determination of enrofloxacin residue in chicken muscle using molecular imprinted solid phase extraction-high performance capillary electrophoresis
分子印迹固相萃取-高效毛细管电泳法检测鸡肉中的恩诺沙星残留

Molecular imprinted polymer targeted for enrofloxacin (ENR) was synthesized using ENR as the template molecules, α-methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the cross-linking agent. With the ENR molecular imprinted polymer, a molecular imprinted solid phase extraction-high performance capillary electrophoresis (MISPE-HPCE) method for the determination of ENR in chicken muscle was developed. The results showed that this method exhibited high selectivity and sensitivity for the determination of ENR in chicken muscle. Under the optimized conditions, the limit of detection and limit of quantification were 92.02 μg/kg and 336.04 μg/kg, respectively. The recoveries of the ENR spiked in chicken muscle at different levels were in the range of 77.84%~86.52%, and the relative standard deviations (RSDs) were in the range of 2.18%~3.76%. This MISPE-HPCE method is feasible for the analysis of ENR residue in chicken muscle.