摘要
建立液相色谱串联质谱法测定粮谷中的多菌灵的不确定度分析方法。根据JJF 1059—1999《测量不确定度评定与表示》中有关规定,建立不确定度评定的数学模型,分析不确定度的来源,并对不确定度分量进行量化和合成。评定结果表明,标准曲线拟合、标准溶液配制和体积量取所产生的不确定度分量较大;大米中多菌灵含量为0.033 5 mg/kg时,其扩展不确定度为0.002 2 mg/kg(k=2)。
A methodology of uncertainty evaluation for the determination of carbendazim residues in rice by liquid chromatography-tandem mass spectrometry（LC-MS-MS） was proposed.According to the Evaluation and Expression of Uncertainty in Measurement（JJF 1059-1999）,the mathematical model of uncertainty was established.The sources of uncertainty were analyzed and each component of uncertainty was quantified individually and then combined.The results showed that the curve fitting,preparation of standard solution and volumetric measurement were the main sources of uncertainty,and the expanded uncertainty was 0.002 2 mg/kg（k = 2）,and the residue of carbendazim in rice was 0.033 5 mg/kg.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2015年第22期169-172,共4页
Food Science
关键词
液相色谱串联质谱
多菌灵
不确定度
大米
liquid chromatography-tandem mass spectrometry
carbendazim
uncertainty
rice
