分光光度计测量铁含量不确定度评定

文章根据GB/T 4348.3—2002《工业用氢氧化钠铁含量的测定1,10—菲啰琳分光光度法》,以测试工业用氢氧化钠中铁含量为例,依据JJF1059—1999《测量不确定度评定与表示》与CNAS—GL06:2006《化学分析中不确定度的评估指南》对测量过程中不确定来源进行分析,采用A类、B类评定方法对各种因素引起的不确定度分量、合成不确定度、扩展不确定度进行评定,并给出评定结果。对理化分析领域测量不确定度具有借鉴意义。

Uncertainty Evaluation of Iron Content Measurement Using Spectrophotometer

Based on GB/T 4348.3-2002 Sodium Hydroxide for Industrial Use-Determination of Iron Content 1,10-phenanthroline photometric Method,JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement,and CNAS-GL 06 Guidance on Evaluating the Uncertainty in Chemical Analysis,this paper analyzed the uncertainty cause during measurement process by taking iron content measurement in sodium hydroxide for industrial use as an example.The uncertainty components,combined uncertainty and expanded uncertainty caused...