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Licensed Unlicensed Requires Authentication Published by De Gruyter September 17, 2013

Simultaneous determination of 32 antibiotics in aquaculture products using LC-MS/MS

Ganna Fedorova, Vaclav Nebesky, Tomas Randak and Roman Grabic
From the journal Chemical Papers


An analytical multiclass, multi-residue method for the determination of antibiotics in aquaculture products was developed and validated. A fast, cheap, and straightforward extraction procedure followed by liquid chromatography-tandem mass spectrometry analysis was proposed. This method covers 32 antibiotics of different classes, which are frequently used in aquaculture. Three different extraction procedures were compared, and the extraction with acetonitrile (0.1 vol. % formic acid) showed the best results. The selected extraction procedure was validated at four different fortification levels (10 μg kg−1, 25 μg kg−1, 50 μg kg−1, and 100 μg kg−1). Recoveries of the tested antibiotics ranged from 70 % to 120 %, with the relative standard deviation (RSD) of triplicates lower than 20 %. The limits of quantification (LOQ) ranged from 0.062 μg kg−1 to 4.6 μg kg−1, allowing for the analysis of trace levels of these antibiotics in aquaculture products. The method was applied to the analysis of selected antibiotics in fish and shrimp meat available in the Czech market.

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Published Online: 2013-9-17
Published in Print: 2014-1-1

© 2013 Institute of Chemistry, Slovak Academy of Sciences