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Abstract: Based on the magnetic kaolinite-MPS, magnetic molecularly imprinted particles (MMIPs) were further synthesized via activators regenerated by electron transfer atom transfer radical polymerization (AGET ATRP). The as-prepared MMIPs were charcterized by FTIR, TEM, XRD, TGA and VSM, which indicated that the MMIPs exhibited magnetic sensitivity (Ms=13.365 emu g-1), thermal stability and the larger specific surface area(112 m2 g-1). The results of batch adsorption experiments suggested that pH value of 6.0 in testing solution was the optimal adsorption condition. The kinetic properties of MMIPs were well described by the pseudo-second-order model. The Langmuir isotherm model was fitted to the equilibrium data, and the monolayer adsorption capacity of MMIPs at 25 C was 89.36 mg g-1. The selective recognition experiments demonstrated high affinity and selectivity of MMIPs towards ciprofloxacin (CIP) over competitive antibiotics. Combined with high performance liquid chromatographic analysis technology, the prepared MMIPs were successfully applied to extract trace CIP in fish samples, and the recoveries of CIP was 92.15%.
Template and target information: ciprofloxacin, CIP
Author keywords: magnetic kaolinite, magnetic molecularly imprinted particles, Ciprofloxacin, Specific adsorption