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  • Title: Determination of oxolinic acid in faeces and urine of turbot (Scophthalmus maximus) by high-performance liquid chromatography using fluorescence detection.
    Author: Pouliquen H, Armand F.
    Journal: J Chromatogr B Biomed Sci Appl; 2000 Nov 10; 749(1):127-33. PubMed ID: 11129072.
    Abstract:
    A procedure for the determination of oxolinic acid (OA) in faeces and urine of turbot (Scophthalmus maximus), using reversed-phase high-performance liquid chromatography is described. Liquid chromatography was performed on a 5-microm PuroSpher RP-18E cartridge using acetonitrile and 0.001 M aqueous orthophosphoric acid solution as mobile phase, with fluorescence detection. After the addition of an internal standard, oxolinic acid was extracted by using a liquid-liquid extraction procedure. Linearity and precision were checked over the concentration ranges 1.0-1000 microg/g (faeces) and 0.06-10.00 microg/ml (urine). Limits of detection of OA in faeces and urine were 0.20 microg/g and 0.02 microg/ml respectively. Mean extraction recoveries of OA from faeces and urine were 102.0 and 91.6% respectively.
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