GB 31660.4-2019 Determination of Residual Amounts of Medrogestone and Medroxyprogesterone Acetate in Animal-derived Food by Liquid Chromatography-Tandem Mass Spectrometry

GB 31660.1-2019 The Maximum Residue Limit of Veterinary Drugs in Food GB 31660.2-2019 Determination of Residual Amounts of Phenols such as Nonylphenol, Octylphenol, Bisphenol A, Di-n-Butyl Phthalate, Estrone, 17α-Ethynyl Estradiol, 17β-Estradiol, and Estradiol Triol in Aquatic Products by Gas Chromatography-Mass Spectrometry GB 31660.3-2019 Determination of Benzyl Phenol, Nonyl Phenol, Bisphenol A, Ethinylestradiol, Estrogen, 17α-Ethinylestradiol, 17β-Estradiol, and Estriol Residues in Aquatic Products by Gas Chromatography-Mass Spectrometry Method GB 31660.5-2019 Determination of amantadine residues in animal food by liquid chromatography-tandem mass spectrometry GB 31660.6-2019 Determination of Residual Concentrations of Five α2-Receptor Agonists in Animal-derived Food by Liquid Chromatography-Tandem Mass Spectrometry GB 31660.7-2019 Determination of Residual Concentrations of Five α2-Receptor Agonists in Animal-derived Food by Liquid Chromatography-Tandem Mass Spectrometry GB 31660.8-2019 Determination of Residual Amounts of Aminophthalazine in the Edible Tissue and Milk of Cows by Liquid Chromatography-Tandem Mass Spectrometry GB 31660.9-2019 Determination of Residual Amount of Ethoxyacarphenon in Tissue of Poultry by High-Performance Liquid Chromatography (HPLC)