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采用液相色谱-串联质谱法对家畜尿液中莱克多巴胺、克伦特罗、沙丁胺醇、特布他林、西马特罗和妥布特罗6种β-兴奋剂残留的不确定度进行评定,根据《测量不确定度的评定与表示》等相关技术规范要求,通过建立数学模型,对测量重复性、标准曲线、样品量取体积、定容体积、标准溶液、提取回收率等不确定因素进行了评定,对测量结果的各不确定度来源进行分析和量化。得出家畜尿液中莱克多巴胺、克伦特罗、沙丁胺醇、特布他林、西马特罗和妥布特罗6种β-兴奋剂残留的扩展不确定度分别为:0.107、0.062、0.154、0.218、0.063和0.244。
Uncertainties in determination of six β-agonists residues in rapeseedam, clenbuterol, salbutamol, terbutaline, cimaterol and tobrateol in livestock urine were assessed using liquid chromatography-tandem mass spectrometry According to the requirements of relevant technical specifications such as “Evaluation and Expression of Measurement Uncertainty”, the mathematical model was established to measure the repeatability, standard curve, sample volume, volume, standard solution, extraction recovery and other uncertainties The assessment was carried out to analyze and quantify the sources of uncertainty in the measurement results. The extended uncertainty of the residues of six kinds of β-agonists in rape dopamine, clenbuterol, salbutamol, terbutaline, cimaterol and tobrateol in livestock urine were obtained as follows: 0.107,0.062,0.154 , 0.218, 0.063 and 0.244.