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Validation of a rapid and sensitive routine method for determination of chloramphenicol in honey by LC–MS/MS

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Chloramphenicol (CAP) is a broad spectrum antibiotic used in the treatment of human and animal diseases. However, CAP can exhibit toxic effects in certain susceptible individuals, causing bone marrow depression, including fatal aplastic anemia. As this condition is dose-independent, CAP has been banned for use in food-producing animals, including honeybees. In this study, a quick, simple and low-cost routine analytical method was developed for the screening and confirmation of chloramphenicol in honey by LC–MS/MS. Sample clean-up takes only two steps without SPE procedure and with recoveries >97%. Honey samples were selected from several producers in Brazil and diluted in a small amount of water. After fortification and addition of d s-chloramphenicol as internal standard, the samples were extracted with ethyl acetate. Complete validation of the method was performed on the basis of EU decision 2002/657. Within-laboratory CV reproducibility at the lowest concentration was <10%. An evaluation of two different methods to calculate the decision limit and detection capability gave 0.08 µg kg−1 for CCα and 0.12 µg kg−1 for CCβ.
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Keywords: LC/MS; chloramphenicol; chromatography; honey; veterinary drug residues

Document Type: Research Article

Affiliations: Ministério da Agricultura, Pecuária e Abastecimento (MAPA), Laboratório Nacional Agropecuário (Lanagro), Rua Raul Ferrari, S/N, Jardim Santa Marcelina, 13100-105 CampinasSão Paulo, Brazil

Publication date: April 1, 2012

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