Animal derived food/pesticide residue detection

The national standard for food safety - Determination of residues of trichlorfon, dichlorvos, and fly venom phosphorus in animal derived foods - Liquid chromatography-mass spectrometry/mass spectrometry method 1. Scope: This standard specifies the preparation of samples and the liquid chromatography-mass spectrometry/mass spectrometry detection method for residues of trichlorfon, dichlorvos, and fly venom phosphorus in livestock and poultry cut meat, salted casings, and honey. This standard is applicable to the determination of residual amounts of trichlorfon, dichlorvos, and fly poison phosphorus in sliced meat, salted casings, and honey. Other foods can refer to it for implementation. 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 2763 National Standard for Food Safety - Maximum Residue Limits of Pesticides in Food - GB/T 6682 Analysis of Laboratory Water - Specifications and Test Methods -3 Principles: Dichloromethane or ethyl acetate was used to extract trichlorfon, dichlorvos, and phoxim from the sample. The extract was concentrated, defatted, and determined by liquid chromatography-mass spectrometry/mass spectrometry. The external standard peak area method was used for quantification, and the ion abundance ratio was qualitative. Unless otherwise specified, all reagents and materials are analytical pure, and water is grade one water in accordance with GB/T 6682

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