| 饲料中钙含量测定的不确定度评定 |
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| 引用本文： | 张荷丽. 饲料中钙含量测定的不确定度评定[J]. 湖北农业科学, 2012, 0(1): 172-174,191 |
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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 |
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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(2009GGJS-128) |
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| 摘 要： | 建立了EDTA滴定法测定饲料中钙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的来源并计算了各不确定度分量,并得出合成标准不确定度和扩展不确定度。在产蛋鸡配合饲料钙含量的测定中,钙含量为4.00%,其扩展不确定度为0.040%,K=2。影响钙含量测量结果不确定度的最大因素是重复性实验的不确定度。
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| 关 键 词： | 饲料 钙含量 EDTA滴定法 不确定度 |
Evaluation of Uncertainty for Determination of Calcium Content in Feed |
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| ZHANG He-li. Evaluation of Uncertainty for Determination of Calcium Content in Feed[J]. Hubei Agricultural Sciences, 2012, 0(1): 172-174,191 |
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| Authors: | ZHANG He-li |
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| Affiliation: | ZHANG He-li(Zhengzhou College of Animal Husbandry Engineering,Zhengzhou 450011,China) |
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| Abstract: | The mode of uncertainty evaluation of calcium in feed by EDTA titration was established and the sources of uncertainty were analyzed.The components of related standard uncertainty,combined standard uncertainty,and expanded uncertainty were calculated.The content of calcium content in compound feed for laying hens was 4.00%,the expanded uncertainty was 0.40%,K was 2.The determination uncertainty was mainly due to measurement repeatability. |
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| Keywords: | feed calcium content EDTA titration uncertainty |
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