论文部分内容阅读
建立了液相色谱-串联质谱(LC-MS/MS)法测定动物源食品中β受体阻断剂残留量的数学模型,依据影响测量结果的不确定度来源,如标准溶液配制、样品称量、回归方程、方法重复性等,对各个不确定度分量进行评定和分析,给出了0.5μg/kg检测水平下,液相色谱-串联质谱法测定食品中β受体阻断剂残留量的相对合成标准不确定度以及扩展不确定度。通过比较各分量不确定度,发现实验过程中最小二乘法拟合带来的不确定度影响最大。
A mathematical model for the determination of β-blockers residues in animal foodstuffs by liquid chromatography-tandem mass spectrometry (LC-MS / MS) was established. According to the sources of uncertainty affecting the measurement results, such as standard solution preparation, Quantity, regression equation, repeatability of the method and so on, all the uncertainty components were evaluated and analyzed, and the residues of β-blockers in food were determined by liquid chromatography-tandem mass spectrometry at the detection level of 0.5μg / kg Relative synthetic standard uncertainty and extended uncertainty. By comparing the uncertainty of the components, it is found that the uncertainty caused by the least square fitting in the experiment has the greatest impact.