Objective To evaluate the uncertainty of twelve kinds of sulfanilamide residues in casing by liquid chromatography-tandem mass spectrometry (LC-MS/MS), so as to ensure the accuracy and reliability of results. Methods Evaluation and expression of uncertainty were measured based on during analyzing twelve kinds of sulfanilamide residues in casing according to GB/T 20759-2006. Results A mathematical model was established, all of the influence factors on measuring uncertainty were found out, and the uncertainties of type A or type B were evaluated respectively. Conclusion The preparation and elution of solutions, the recoveries and the fitted linear regression equation for the calibration curve were the main source of uncertainties.
标题:肠衣中12种磺胺类药物残留量测定的 不确定度分析
英文标题:Uncertainty evaluation of twelve kinds of sulfanilamide residues in casing