液相色谱-质谱联用法测定辣椒粉中甲胺磷残留量的不确定度评定  

Uncertainty Evaluation of Determination of Methamidophos Residues in Chili Powder by Liquid Chromatography-Mass Spectrometry

作　　者：李曰昌 LI Yuechang(Jiaozhou General Inspection and Testing Center,Qingdao 266324,China)

机构地区：[1]胶州市综合检验检测中心,山东青岛266324

出　　处：《食品安全导刊》2024年第25期83-86,共4页China Food Safety Magazine

摘　　要：采用液相色谱-质谱联用法测定辣椒粉中甲胺磷的残留量,根据测定过程对测量不确定度进行评定。辣椒粉中甲胺磷的检测结果可表示为(0.0310±0.0011)mg·kg^(-1),k=2。测定过程中校准过程对甲胺磷测量不确定度的影响最大,其次是样品前处理过程和测定过程中的随机效应,体积变化和样品称量对不确定度的影响较小。检测时应重点关注校准过程,尽量减小其对测量结果不确定度的影响。Liquid chromatography-mass spectrometry was used to determine the residual amount of methamidophos in chili powder,and the measurement uncertainty was evaluated according to the determination process.The detection result of methamidophos in chili powder can be expressed as(0.0310±0.0011)mg·kg^(-1),k=2.The calibration process had the greatest impact on the uncertainty of methamidophos measurement during the measurement,followed by the random effects during the sample preparation process and the measurement process,and the volume change and sample weighing had less influence on the uncertainty.The focus should be on the calibration process to minimize its impact on the uncertainty of the measurement results.

关 键 词：不确定度 甲胺磷 液相色谱-质谱联用法 

分 类 号：O657.63[理学—分析化学] TS207.3[理学—化学]