电位滴定法测定PA6中端氨基和端羧基含量的不确定度评定  

Evaluation of the uncertainty of measuring the end amino and end carboxyl content in PA6 by the method of potentiometric titration

作　　者：周丽华[1] 

机构地区：[1]中国石化仪征化纤有限责任公司研究院,江苏仪征211900

出　　处：《合成技术及应用》2016年第2期56-61,共6页Synthetic Technology & Application

摘　　要：通过电位滴定法测定PA6中端氨基和端羧基含量,分析并找出测定过程中影响不确定度的因素,并对各不确定度分量进行评定。结果表明:标准滴定溶液的浓度和消耗标准滴定溶液的体积所引入的不确定度对总不确定度贡献最大,其次是测量的重复性。Using the method of potentiometric titration to measure the end amino and the end carboxyl content in PA6,in order to analyze and identify the uncertainty factors affecting the determination process,and all uncertainty components were evaluated。The results showed that uncertainty arising from the concentration of standard titration solution and volume of consumption standard titration solution,which was the greatest contribution to the total uncertainty,the second was the repeatability of measurement。

关 键 词：PA6 电位滴定法 端氨基 不确定度 

分 类 号：O657.1[理学—分析化学] O633.22[理学—化学]