| abstract |
The present invention is a method for detecting residues of 5 kinds of β-receptor agonists in pig liver, beef and mutton. The 5 kinds of β-receptor agonists are: ractopamine, clenbuterol, salbutamol, cimaterol , clopronaline; detection method comprises measuring sample extraction solution preparation, ultra-high performance liquid chromatography, mass spectrometry and quantitative calculation, with the peak area ratio of each characteristic ion mass chromatographic peak and corresponding isotope internal standard as ordinate, the concentration of contrast solution is The abscissa draws a standard curve and calculates the contents of the five beta-receptor agonists in the sample according to the regression equation. The method of the invention has the advantages of simple operation, high sensitivity, good accuracy, good repeatability and day-to-day precision, and is suitable for qualitative and quantitative detection and analysis of beta-receptor agonist residues in large-scale livestock products. |