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食品研究与开发:2017,38(7):110-114
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原子吸收法测定金银花中铜的不确定度分析
辜忠春1,姚胜海2,杨柳1,李光荣1,杨志斌1,李爱华1
(1. 湖北省林业科学研究院, 国家林业局林产品质量检验检测中心(武汉), 湖北 武汉 430075; 2. 湖北省林业科学研究院鹤峰森林药材研究所, 湖北 恩施 445800)
Evaluation of Uncertainty for Determination of Copper in Lonicera japonica Flos by FAAS
GU Zhong-chun1, YAO Sheng-hai2, YANG Liu1, LI Guang-rong1, YANG Zhi-bin1, LI Ai-hua1
(1. Hubei Academy of Forestry, Forest Products Quality Inspection Center of the State Forestry Bureau (Wuhan), Wuhan 430075,Hubei, China; 2. Hefeng Forest Medical Institute of Hubei Academy of Forestry,Enshi 445800, Hubei, China)
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投稿时间:2016-11-17    
中文摘要: 建立火焰原子吸收光谱法测定金银花中铜含量的不确定度评定方法。通过分析试验过程,确立数学模型,识别 各不确定度分量,计算合成标准不确定度和扩展不确定度。结果表明,金银花中铜含量测定结果为(1.6±0.2)mg/kg,k=2; 影响金银花中铜含量测量不确定度的最大因素是由拟合标准曲线求铜含量产生。该评定模型可为火焰原子吸收光谱法 的测量不确定度评估提供参考。
Abstract:The content of copper in Lonicera japonica flos was determined by flame atomic absorption spec- trometry(FAAS), the uncertainty evaluation was established. The experimental process was analyzed to estab- lish mathematical model. Each uncertainty component was recognized, and then the standard uncertainty and extended uncertainty was calculated. Results showed that the content of copper in lonicera japonica flos was (1.6±0.2) mg/kg,k=2, the standard curve fitting was used to calculate the content of copper, which was the biggest influence factor for testing uncertainty for the content of copper in lonicera japonica flos determined by FAAS. The evaluation model could provide a reference for FAAS testing uncertainty evaluation.
文章编号:201707024     中图分类号:10.3969/j.issn.1005-6521.2017.07.024    文献标志码:A
基金项目:中央财政林业科技推广示范项目([2016]HBTG17)
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