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投稿时间：2016-04-15
投稿时间：2016-04-15
中文摘要: 建立原子荧光光谱法测定海产品中锡含量的测量不确定度的测量模型，根据模型分析并计算不确定度各个 分量、结果的不确定度以及扩展不确定度。结果表明，引起测量不确定度的最主要来源是测定 C 值时用最小二乘法 拟合标准工作曲线所引入的不确定度。计算得到在海产品中锡含量为 0.293 mg/kg 时，扩展不确定度为 0.288 mg/kg， 包含因子 k 为 2。该方法适用于海产品中锡含量的测量不确定度评定。
Abstract:A measurement model was established， the independent uncertainty， standard uncertainty and ex－ panded uncertainty coming from analysis procedure were obtained. The major source of the uncertainty was the calibration curve calculated on the basis of the principle of method of least squares when determining C. As tin content in seafood was 0.293 mg/kg， the expanded uncertainty was 0.288 mg/kg and the coverage factor k was 2. This method was suitable for evaluating the uncertainties in the measurement of tin in seafood.
keywords: measurement uncertainty atomic fluorescence spectrometry （AFS） tin seafood microwave digestion
文章编号：201713040 中图分类号： 文献标志码：A
基金项目:
| Author Name | Affiliation |
| CUI Ying， NI Song， ZHANG Hai-bin， XIAO Ya-bing | Tianjin Entry-exit Inspection and Quarantine Bureau，Tianjin 300461， China |
引用文本：
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