Abstract
For preparing fluorinated quinolone antibiotic medicine locally used in stomatology, simultaneous determination of norfloxacin, ciprofloxacin, and enoxacin was carried out by multiphase ion chromatography with fluorescence detection. Quinolone antibiotics were separated by Dionex OmniPac PAX-500 column with an eluent of 15 mmol/L H2SO4 and 35% methanol (v/v) at a flow-rate of 1.0 ml/min and detected with fluorescence with excitation and emission wave lengths of 347 nm and 420 nm respectively. The detection limits (S/N=3) of norfloxacin, ciprofloxacin and enoxacin were 50, 105 and 80 ng/ml respectively. The relative standard deviations of retention time, peak area and peak height were less than 1.1% and good linear relationship resulted. The developed method was applied to pharmaceutical formulations and biological fluids.
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Project supported by the National Natural Science Foundation of China (Nos. 20375035 and 20527005), and the Natural Science Foundation of Zhejiang Province (No. Z404105), China
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Zhang, Yz., Zhang, Zy., Zhou, Yc. et al. Determination of fluorinated quinolone antibacterials by ion chromatography with fluorescence detection. J. Zhejiang Univ. - Sci. B 8, 302–306 (2007). https://doi.org/10.1631/jzus.2007.B0302
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DOI: https://doi.org/10.1631/jzus.2007.B0302