Residue detection of exported animal derived food/veterinary drugs

This standard specifies the determination of residual quinoline metabolites in exported animal derived foods by liquid chromatography-mass spectrometry/mass spectrometry. This standard is applicable to the determination of residues of 3-methylquinoxaline-2-carboxylic acid (MQCA), a metabolite of quinoline in animal derived foods such as pork, beef, chicken, fish, shrimp, and pig liver. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T6682 Specification and Test Methods for Analytical Laboratory Water 3 Method Abstract: 3-Methylquinoxaline-2-carboxylic acid in the sample was hydrolyzed with protease, acidified with hydrochloric acid, defatted with n-hexane, centrifuged and filtered. The aqueous solution was purified with a mixed anion exchange solid-phase extraction column, determined by liquid chromatography-mass spectrometry/mass spectrometry, and quantified by internal standard method

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