超高效液相色谱—串联质谱法测定植物油中甲胺磷残留量的不确定度评定OA北大核心CSTPCD
Evaluation of uncertainty in determination of methamidophos residue in vegetable oil by ultra-performance liquid chromatography-tandem mass spectrometry
[目的]保证农药甲胺磷残留检测质量.[方法]采用QuEChERS前处理方法、超高效液相色谱—串联质谱法检测一种植物油样品,测定样品的同时进行加标回收率测定,通过对试验过程中不确定度来源进行分析,对其测量不确定度进行评定.[结果]橄榄油样品中未检出甲胺磷残留量,对正确度 1 样品进行不确定度评定,结果为(0.018±0.010)mg/kg.[结论]在植物油中甲胺磷残留量的不确定度测量过程中,标准曲线拟合、超高液相色谱—质谱联用仪、标准工作溶液的影响相对较大,样品称量、样品前处理和样品重复性测定的影响相对较小.
[Objective]To evaluation the uncertainty of determination of methamidophos residues in vegetable oil by ultra-performance liquid chromatography-tandem mass spectrometry.[Methods]A vegetable oil sample was detected by ultra-high performance liquid chromatography-tandem mass spectrometry,and the recovery rate was determined at the same time.By analyzing the sources of uncertainty in the experimental process,the measurement uncertainty was ultimately evaluated.[Results]The residue amount of methamidophos in olive oil samples was not detected,and the uncertainty of the accuracy 1 sample was evaluated,The results were(0.018±0.010)mg/kg.[Conclusion]In the uncertainty measurement process of methamidophos residue in vegetable oil,the influence of standard curve fitting,ultra-high liquid chromatography-mass spectrometry,and standard working solution is relatively large,while the influence of sample weighing,sample pretreatment,and sample repeatability determination is relatively small.
高含;刘锐;姜铖;王飞飞
云南云科特色植物提取实验室有限公司,云南 昆明 651000
植物油甲胺磷液相色谱—串联质谱法不确定度
vegetable oilmethamidophosliquid chromatography-tandem mass spectrometryuncertainty
《食品与机械》 2024 (010)
62-67 / 6
平台建设专项(云南实验室建设)(编号:2022YKZY001)
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