容量法测定肥料中氮含量不确定度的分析

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容量法测定肥料中氮含量不确定度的分析
盖崴[1] 张玉娟[2] 赵延华[1] 张素艳[1][1]辽宁省分析科学研究院,辽宁沈阳110015 [2]盘锦中润化工有限公司,辽宁盘锦124022摘　要:通过对蒸馏一滴定法测定肥料中氮含量的不确定度的系统分析，阐述了测量结果不确定度的主要来源。并对其分量进行了量化计算，最后计算出合成标准不确定度和扩展不确定度。通过评估。得出影响容量法氮含量测定不确定度的主要因素是：温度变化引起的体积变化。[著者文摘]

关键词:容量法定氮 不确定度 评定
分类号:　O655.2[著者标引]文献标识码：A文章编号：1004-0935（2006）11-0676-03栏目信息：分析检测
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Analysis of the Uncertainty of the Content of Nitrogen in Fertilizer with Capacity MethodGAI Wei, ZHANG Yu-juan, ZHAO Yan-hua, ZHANG Su-yanGAI Wei, ZHANG Yu-juan, ZHAO Yan-hua, ZHANG Su-yanAbstract:The main reasons of the uncertainty of the result for the content of nitrogen in fertilizer with distillation - titration by systemic analysis were introduced in this paper, the accurate calculation of the standard uncertainty and zxpanded uncertainty were carried out. In a word the affect on the uncertainty of the content of nitrogcn with capacity method was the volume change with the temperature change.[著者文摘]

Key words:Capacity method; Uncertainty; Evaluation