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  • Simultaneous determination of chloramphenicol and florfenicol in liquid milk, milk powder and bovine muscle by LC-MS/MS.

Simultaneous determination of chloramphenicol and florfenicol in liquid milk, milk powder and bovine muscle by LC-MS/MS.

Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment (2012-01-14)
D R Rezende, N Fleury Filho, G L Rocha
ANOTACE

A validated method based on European and Brazilian legislation is reported. It is applicable to the simultaneous determination of chloramphenicol (CAP) and florfenicol (FF) by LC-MS/MS in liquid milk, milk powder and bovine muscle. The chromatographic analysis is completed in 6 min and the extraction procedure is very simple, involving only one step liquid-extraction with ethyl acetate. Where it proved necessary to include clean-up, an efficient and rapid step using C18-dispersive solid was added. Initially, a complete validation was performed with liquid milk matrix; later the scope was extended to the other matrices through extending the inter-day precision (within laboratory reproducibility) RSD values. An internal standard (d(5)-CAP) was employed for quantitative purposes. The method was shown to have good accuracy and precision for determining CAP residues at the level of 0.3-0.6 g kg(-1) and FF residues at the level of 5-15 µg kg(-1).

MATERIÁLY
Číslo produktu
Značka
Popis produktu

Sigma-Aldrich
Thiamphenicol