单扫描极谱法测定食品中苏丹红Ⅰ的不确定度评定  

EVALUATION ON UNCERTAINTY FOR MEASUREMENT OF SUDANⅠIN FOOD BY SINGLE SCAN POLAROGRAPHY

作　　者：蒋雯菁[1] 万渝平[2] 黄荔[2] 但德忠[1] 

机构地区：[1]四川大学环境科学与工程系,成都610065 [2]成都市产品质量监督检验所,成都610041

出　　处：《化学分析计量》2009年第2期10-13,共4页Chemical Analysis And Meterage

摘　　要：依据标准曲线法建立了单扫描极谱法测定食品中苏丹红Ⅰ的不确定度评定的数学模型,对影响测量结果的不确定度分量进行了分析,较全面地评定了测定结果的不确定度。单扫描极谱法测定食品中苏丹红Ⅰ的不确定度主要来源于峰电流的重复性、标准曲线的影响、样品称量、标准物质的纯度和称量、实验中量器的校准等因素,其中最主要的分量是通过标准曲线拟合求样品溶液浓度时引入的测量不确定度。Based on the method of standard curve,the mathematical model of evaluation on uncertainty for determination of SudanⅠ in food by single scan polarography was established. The related components of uncertainty were analyzed.A comprehensive evaluation on uncertainty was carried out. The measurement uncertainty mainly came from the repeatability of the peak current,the impact of standard curve,sample weighing,purity and weighing of standard material,calibration of all measures used in the experiment. The uncer...

关 键 词：苏丹红Ⅰ 单扫描极谱法 不确定度 

分 类 号：TS207.5[轻工技术与工程—食品科学]