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  • Title: Simultaneous determination of thiamphenicol, florfenicol and florfenicol amine in swine muscle by liquid chromatography-tandem mass spectrometry with immunoaffinity chromatography clean-up.
    Author: Luo P, Chen X, Liang C, Kuang H, Lu L, Jiang Z, Wang Z, Li C, Zhang S, Shen J.
    Journal: J Chromatogr B Analyt Technol Biomed Life Sci; 2010 Jan 15; 878(2):207-12. PubMed ID: 19858000.
    Abstract:
    A rapid and sensitive liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) method to quantify thiamphenicol (TAP), florfenicol (FF), and florfenicol amine (FFA) in swine muscle is described. An immunoaffinity chromatography (IAC) column based on polyclonal antibodies and protein A-sepharose CL 4B was used to clean-up extracted samples. IAC optimized conditions were found that allowed the IAC to be reused for selective binding of TAP, FF, and FFA. The dynamic column capacity was more than 512ng/mL of gel after being used for 15 cycles. From fortified swine muscle samples at levels of 0.4-50ng/g, the average recoveries were 85.2-98.9% with intra- and inter-day variations less than 9.8% and 12.4%, respectively. The limit of quantitation ranged from 0.4 to 4.0microg/kg.
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