Advantages of LC—MS—MS compared to LC—MS for the determination of nitrofuran residues in honey

Tribalat, Laure; Paisse, Olivier; Dessalces, Guy; Grenier-Loustalot, Marie-Florence
December 2006
Analytical & Bioanalytical Chemistry;Dec2006, Vol. 386 Issue 7/8, p2161
Academic Journal
In the framework of developing analyses for exogenous contaminants in food matrices such as honey, we have compared data obtained by high-performance liquid chromatography coupled with mass spectrometry (LC–MS) to those provided by high-performance liquid chromatography and tandem mass spectrometry (LC–MS–MS). Initial results obtained with LC–MS showed that the technique lacked selectivity, which is why the method was validated by LC–MS–MS. This method involves a solid-phase extraction (SPE) of nitrofuran metabolites and nitrofuran parent drugs, a derivatization by 2-nitrobenzaldehyde for 17 h, and finally a clean-up by SPE. The data obtained show that the limits of detection varied between 0.2 and 0.6 μg kg−1 for the metabolites and between 1 and 2 μg kg−1 for nitrofuran parent drugs. The method was applied to different flower honeys. The results showed that nitrofurans (used as antibiotics) are consistently present in this matrix, the predominant compound being furazolidone. [Figure not available: see fulltext.]


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