Objective To understand the residual contamination of quinolones antibiotics in Shenzhen market milk powder. Methods Totally 110 milk powder samples of different species were purchased from supermarkets and food stores in all districts of Shenzhen and11 kinds of quinolones antibiotics including ciprofloxacin and ofloxacin were detected by liquid chromatography-tandem mass spectrometry. Results No quinolones antibiotics were detected in the milk powder samples collected in all districts of Shenzhen and detection rate was 0. Conclusion The situation about residual contamination of quinolones antibiotics in Shenzhen market milk powder is good in general. However, more attention should be paid to strengthen the supervise of milk source and milk powder production process, and regular monitoring is necessary.
标题：深圳市售奶粉中11种喹诺酮类抗生素含量检测分析
英文标题：Detection and analysis on 11 kinds of quinolones antibiotics in Shenzhen market milk powder
