两点法确定混胺中两组分的电位滴定终点
DETERMINATION OF THE END-POINT OF POTENTIOMETRIC TITRATION OF BINARY COMPONENTAL-AMINE MIXTURE BY THE TWO-POINT METHOD
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.
滴定终点
两点法
两组分混胺
Potentiometric titration
End-point
Two-piont method
Binary componental amine mixture
Abstract
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.
中图分类号 O657.12
所属栏目 工作简报
基金项目
收稿日期 2005/5/15
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备注王菊香(1971),女,山东烟台市人,硕士,副教授,从事液体推进剂分析的教学和科研工作.
引用该论文: WANG Ju-xiang,SHEN Gang. DETERMINATION OF THE END-POINT OF POTENTIOMETRIC TITRATION OF BINARY COMPONENTAL-AMINE MIXTURE BY THE TWO-POINT METHOD[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2006, 42(11): 903～905
王菊香,申刚. 两点法确定混胺中两组分的电位滴定终点[J]. 理化检验－化学分册, 2006, 42(11): 903～905
被引情况:
【1】冯俊贤,郄文娟,张如春,苏洪茹,宋丽英, "等电位间隔-电位滴定法",理化检验－化学分册 46, 246-248(2010)
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参考文献
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【3】冯俊贤,李素娟.两点电位滴定法测定调味品中氯化钠[J].中国调味品,1994,19(4):26-27．
【4】冯俊贤,宋丽英,李素娟,等.两点法确定电位滴定终点[J].河北轻化工学院学报,1995,16(4):23-26．
【5】中科院数学所统计组.常用数据统计方法[M].北京:科学出版社,1974:35-123．
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