Abstract
A procedure was developed for simultaneous determination of 21 synthetic antibacterials in fish and meat products by high performance liquid chromatography with a photodiode array detector. The antibacterials were extracted with acetonitrile-0.2% metaphosphoric acid (7:3), followed by liquid-liquid partition with dichloromethane. High performance liquid chromatography was carried out on a TSK-gel ODS-80Ts column using gradient elution with acetonitrile-sodium dihydrogenphosphate. The recoveries of antibacterials from fish and meat products spiked at 1.0μg/g were over 70% except in the cases of sulfisomidine and carbadox. The detection limits were 0.05-0.10μg/g for each antibacterial except thiamphenicol (0.25μg/g).
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