Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10604
Title: Determination of Tetracycline Antibiotic Residues in Edible Swine Tissues by Liquid Chromatography with Spectrofluorometric Detection and Confirmation by Mass Spectrometry
Authors: Pena, Angelina 
Lino, Celeste M. 
Alonso, Rosa 
Barceló, Damia 
Keywords: Tetracyclines; Swine tissues; Liquid chromatography; Spectrofluorometric detection; Mass spectrometric detection
Issue Date: 27-Jun-2007
Publisher: American Chemical Society
Citation: Journal of Agricultural and Food Chemistry. 55:13 (2007) 4973-4979
Abstract: A sensitive and specific method is described for the simultaneous determination of oxytetracycline, tetracycline (TC), and chlortetracycline residues in edible swine tissues, by combining liquid chromatography with spectrofluorometric and mass spectrometry detection. The procedure involved a preliminary extraction with EDTA-McIlvaine buffer acidified at pH 4.0, followed by solid-phase extraction cleanup using a polymeric sorbent. The liquid chromatography analysis was performed with spectrofluorometric detection after postcolumn derivatization with magnesium ions. The limits of quantification were 50 μg/kg for muscle and 100 μg/kg for kidney tissues. The recovery values were greater than 77.8% for muscle and 65.1% for kidney. The method has been successfully used for the quantification of tetracyclines in swine tissues samples. The selective liquid chromatography mass spectrometric analysis for confirmation of oxytetracycline in one positive swine muscle sample was made by atmospheric pressure chemical ionization (APCI). The APCI mass spectra of the TCs gave the protonated molecular ion and two typical fragment ions, required for their confirmation in single ion monitoring scan mode in animal tissues.
URI: http://hdl.handle.net/10316/10604
ISSN: 0021-8561
DOI: 10.1021/jf070398j
Rights: openAccess
Appears in Collections:FFUC- Artigos em Revistas Internacionais

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