Improved Study on the Determination of Enrofloxacin and Ciprofloxacin Residue in Pork Tissue by Reversed Phase HPLC

Enrofloxacin and ciprofloxacin residues in animal tissue were determined simultaneously by HPLC with f1uorescence detector. The conclusion showed that the linear relationship were kept in the range of 2 μg/L-100 μg/L, with correlation coefficients 0.999 3 and 0.999 1 respectively. The minimum quantitative limit of enrofloxacin and ciprofloxacin were both 2 μg/kg. The recovery of enrofloxacin was between 85 %-90 % and the recovery of ciprofloxacin was between 92 %-99 %.