Synthesis of Sponge-like Material for the Extraction of Fluoroquinolones in Milk

摘要

The new sponge material was prepared by the copolymerization of polystyrene and methacrylic acid. The polystyrene seed was prepared by two-step seed swelling polymerization. Scanning electron microscopy images showed that the sponge material were clumps with porous morphologies. The adsorption behaviour of the sponge material was analysed by detecting pefloxacin and enfloxacin in milk samples. Under the optimized conditions, good linearity was obtained in the range 0.05-10.0 ug g~(-1), with a correlation coefficient (r~2) of≥ 0.9991. The recoveries at three spiking levels ranged from 85.6 to 106.9% with relative standard deviations (RSDs) of ≤6.6%. The sponge material could be applied to the rapid screening of Pefloxacin and enfloxacin in complicated milk-product matrices.