| 原子吸收光谱法测定婴幼儿奶粉中铁含量不确定度的评定 |
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| 引用本文： | 张荷丽.原子吸收光谱法测定婴幼儿奶粉中铁含量不确定度的评定[J].光谱实验室,2012,29(3):1501-1505. |
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| 作者姓名： | 张荷丽 |
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| 作者单位： | 郑州牧业工程高等专科学校质量检测与管理系 郑州市金水区北林路15号 450011 |
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| 基金项目： | 河南省高等学校青年骨干教师资助计划项目 |
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| 摘 要： | 建立了原子吸收光谱法测定婴幼儿奶粉中铁含量不确定度评定的数学模型,分析了检测过程中不确定度来源并计算了各不确定度分量,得出合成标准不确定度和扩展不确定度。在婴幼儿奶粉中铁含量的测定中,测量值为8.156mg/100g,其扩展不确定度为0.11mg/100g,k=2。影响铁含量测量结果不确定度的最大因素是校准曲线拟合引入的不确定度。
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| 关 键 词： | 奶粉 铁含量 原子吸收光谱法 不确定度 |
Uncertainty Evaluation of Determination of Iron in Milk Powder for Infants by AAS |
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| ZHANG He-Li.Uncertainty Evaluation of Determination of Iron in Milk Powder for Infants by AAS[J].Chinese Journal of Spectroscopy Laboratory,2012,29(3):1501-1505. |
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| Authors: | ZHANG He-Li |
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| Institution: | ZHANG He-Li(Department of Quality Inspection and Management,Zhengzhou College of Animal Husbandry Engineering,Zhengzhou 450011,P.R.China) |
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| Abstract: | The mathtic mode of uncertainty evaluation of the content of iron in milk powder for infants by atomic absorption spectrometry(AAS) was established,and the sources of uncertainty were analyzed,and the each component of uncertainty was calculated,and the combined standard and expanded uncertainty were obtained.The content of iron in milk powder for infants was 8.156mg/100g,and the expanded uncertainty was 0.11mg/100g,k=2.The influence of maximum factor on the uncertainty of the determination results for iron content was calibration curve fitting uncertainty. |
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| Keywords: | Milk Powder Iron Content AAS Uncertainty |
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