摘要
依据GB/T 601-2016《化学试剂标准滴定溶液的制备》中乙二胺四乙酸二钠标准滴定溶液的制备方法和计算公式,按着CNAS-GL006:2018《化学分析中不确定度的评估指南》对乙二胺四乙酸二钠标准滴定溶液浓度的不确定度进行评定,分析不确定度的主要来源,得到浓度为0.05003mol/L的标准滴定溶液的扩展不确定度为0.00062mol/L。
This paper evaluates the uncertainty of the concentration measurement on disodium edetate standard titration solutions and analyzes the sources of the uncertainty,based on GB/T 601-2016,Chemical reagent—Preparations of reference titration solutions,and CNAS-GL006:2018,Guidance on evaluating the uncertainty in chemical analysis.The expanded uncertainty of the solution with concentration of 0.05003mol/L is determined to be 0.00062mol/L.
作者
王贵江
WANG Gui-jiang(Petroleum Industry Standardization Institute,Research Institute of Petroleum Exploration and Development)
出处
《中国标准化》
2019年第15期168-172,共5页
China Standardization
关键词
不确定度
乙二胺四乙酸二钠
标准滴定溶液
uncertainty
ethylenediamine tetraacetic acid disodium salt
reference titration solutions
