原子荧光光谱仪测定粮食中汞含量的不确定性

Evaluation of Uncertainties of Determination of Mercury Content in Liquor-Making Grains by Atomic Fluorescence Spectrometry

依据JJF 1059.1-2012《测量不确定度评定与表示》和GB/T 27411-2012《检测实验室中常用不确定度评定方法与表示》两个不确定度相关标准对《食品安全国家标准食品中总汞及有机汞的测定》GB 5009.17-2014(原子荧光光谱分析法)中汞的测量过程进行不确定度分析,列举出实验中可能影响试验检测结果的各个分量的不确定度,建立合成不确定度的数学模型,计算和评估各个分量的不确定度对检测结果的影响。

According to national standard JJF 1059.1—2012 and GB/T 27411—2012,we evaluated the uncertainties of the determination of mercury content in liquor-making grains by atomic fluorescence spectrometry provided in national standard GB 5009.17—2014.The uncertainty of each component that might affect the test result was analyzed,the mathematical model of the synthetic uncertainty was established,and the influence of the uncertainty of each component on the test result was calculated and evaluated.