Objective To evaluate the uncertainty of determination of bifenthrin in mushroom by QuEChERS-gas chromatography-tandem mass spectrometry (GS-MS/MS). Methods According to the GB 23200.113-2018 method, the uncertainty that may be introduced in the detection process was analyzed and evaluated, and the mathematical model of uncertainty evaluation was established. Results The results showed that the expanded uncertainty was 0.0108 mg/kg (k=2), when bifenthrin content in mushroom was 0.15 mg/kg. Conclusion The uncertainties in the process of determination mainly come from analytical instrument, sample pretreatment and standard working fluid preparation process. This study can provide references for evaluating the uncertainty evaluation of QuEChERS-GC-MS/MS.
标题:基于QuEChERS-气相色谱-串联质谱技术测定香菇中联苯菊酯残留量的不确定度评估
英文标题:Uncertainty evaluation of bifenthrin residues in mushroom based on QuEChERS with gas chromatography-tandem mass spectrometry