摘要
利用两点法确定了液体推进剂混胺中两组分——三乙胺和二甲苯胺的电位滴定终点,并与常规的弧切作图法和二阶微分法确定的滴定终点进行了配对t检验,显示结果之间不存在显著差异,或可予校正。两点法简单快速,结果可靠,特别适宜于大量样品的快速分析。
The two-piont method was applied to the determination of end-point of potentiometric titration of samples of mixture containing trimetryl amine and xylidine, which is used as liquid propellant. The results of determination obtained by this method were compared with the data obtained by the arc tangent graphical method and the 2nd derivation method with t-test, showing that significant differences were not found among the data or can be corrected. It was proved that the two-point method improved the potentiometric titration in easiness and rapidity in operation, in accuracy and precision and in feasibility for analysis of large number of samples.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2006年第11期903-905,907,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
电位滴定法
滴定终点
两点法
两组分混胺
Potentiometric titration
End point
Two-piont method
Binary componental amine mixture
