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  • Title: Determination of benzimidazole residues in bovine milk by ultra-high performance liquid chromatography-tandem mass spectrometry.
    Author: Xia X, Dong Y, Luo P, Wang X, Li X, Ding S, Shen J.
    Journal: J Chromatogr B Analyt Technol Biomed Life Sci; 2010 Nov 15; 878(30):3174-80. PubMed ID: 20956094.
    Abstract:
    A method based on ultra-high performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry (UHPLC-MS/MS) for the simultaneous determination of benzimidazole residues in bovine milk has been optimized and validated. Rapid chromatographic separation of 13 analytes in 8 min was obtained by means of UHPLC. The samples were subject to Oasis MCX solid-phase extraction cartridges for extraction and clean-up. Matrix-matched calibration curves were performed to compensate for the matrix effect and loss in sample preparation. Mean recoveries ranged from 80% to 101% and inter-day precision was lower than 14%. Limit of detection and limit of quantification of the method ranged from 0.01 to 0.5 μg L⁻¹ and from 0.1 to 1.0 μg L⁻¹, respectively.
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