固定pH法测定两组分极弱酸(碱)混合体系  

TITRATION OF BI-COMPONENT MIXTURE OF VERY WEAK ACIDS OR BASES BY THE DEFINITE pH METHOD

作　　者：黄源[1] 俞明华[1] 许艳[1] 俞钟敏 

机构地区：[1]南京化工大学应用化学系,南京210009 [2]南化(集团)公司研究院

出　　处：《理化检验（化学分册）》1998年第10期445-446,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：将固定pH滴定法结合求解一元线性回归方程组应用于极弱酸(碱)混合体系中各组分含量的同时测定。测定了六次甲基四胺-硫酸钠和六次甲基四胺-乙酸钠混合体系中各组分的含量,回收率为96.7％～103.2％。In this paper, the combination use of the definite pH titration and the solution of monadic linear regression equation and its application to the simultaneous determination of co-existing components in a very weak acids (or bases) mixture is reported. It has been applied to the determination of coexisting components in hexam-ine-Na_2SO_4 mixture and in hexamine-sodium acetate mixture with a recovery of 96. 7%～103. 2%.

关 键 词：固定pH滴定 六次甲基四胺 硫酸钠 乙酸钠 分析 

分 类 号：O623.731[理学—有机化学] O614.112[理学—化学]