带鱼中甲基汞的不确定度评定  

Uncertainty Evaluation of Methylmercury in Hairtail

作　　者：刘紫譞[1] 范筱京[1] 吴赞[1] 姜雪成 蔡义珊 

机构地区：[1]北京市理化分析测试中心北京市食品安全分析测试工程技术研究中心,北京100089

出　　处：《现代科学仪器》2017年第2期94-97,共4页Modern Scientific Instruments

摘　　要：目的对液相色谱-原子荧光联用法检测带鱼中甲基汞含量的不确定度进行评定。方法根据GB5009．17—2014《食品安全国家标准食品中总汞及有机汞的测定》建立数学模型，依据JJF-1059．1999《测量不确定度评定与表示》对测量结果的不确定来源进行分析并计算其不确定度。结论当带鱼中甲基汞含量为0．049mg／kg时，其扩展不确定度为0．007mg／kg（k=2）。不确定度主要来源于工作曲线的拟合。Objective Evaluating the uncertainty of methyl mercury in hairtail by liquid chromatography-Atomic fluorescence spectrometer （LC-AFS）.Methods： According to GB5009.17-2014 National Food Safety Standard for Determination of total mercury and organic mercury, the mathematical model was established. According to JJF 1059.1- 2012 Evaluation and Expression of Measurement Uncertainty, the uncertainly sources of the results were analyzed and calculated. Results When the methylmercury in Hairtail beverage was 0.049mg/kg, the expanded uncertainly was 0.007mg/ kg（K=2）.The uncertainly mainly came from curve fitting

关 键 词：不确定度评定 甲基汞 形态分析 

分 类 号：TS254[轻工技术与工程—水产品加工及贮藏工程]