半中和点法测定两种一元弱酸混合酸中各组分酸含量  

Determination of Each Component Acid in Mixture of Two Different Weak Monoacids By Half Neutralization Point Method

作　　者：李汉洙[1] 

机构地区：[1]延边医学院药学系,延吉133000

出　　处：《分析化学》1994年第4期386-389,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文根据两种一元弱酸混合物中测定各组分酸含量的标准曲线法,在理论上证明标准曲线的斜率(α_(A_2)-α_(A_1))值最大时,α_(A_2)=1-α_(A_1)=α_((HA)_1)并提出此时溶液pH值的测量方法,从而根据V_(e_2)/V_e^T=(V/V_e^T-1+α_(A_2))/(2α_(A_2)-1)公式,求出混合酸中各组分酸含量的方法,方法简单、可靠。By the Standard curve method for the determination of the content of each component acid in mixture of two different weak monoacids, the formula αA2=1-αA1- =αHA1 was proved in theory when the slope of Standard curve (αAA2--αA1) is maximium, and the method for the determination of pH in the solution under such condition was proposed. Thus,the content of each component in mixture acids can easily calculate according to the formula

关 键 词：一元弱酸 混合酸 半中和点法 

分 类 号：O611.63[理学—无机化学]