离子色谱法测定一元弱酸的离解常数  

Determination of Dissociation Constant of Mono-acids of by lon Chromatography

作　　者：朱岩 戚文彬[2] 徐素君[2] 杜欢永 张刚峰 

机构地区：[1]浙江省测试技术研究所 [2]杭州大学化学系,杭州310028

出　　处：《分析化学》1993年第2期202-205,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金

摘　　要：本文探索了抑制电导离子色谱法测定pK_a<7的一元弱酸的离解常数,对以HCl为标准测定HF、HNO_2的离解常数和以HF为标准测定乳酸、乙酸和甲酸的离解常数及测定方法的主要误差来源进行了讨论。A method for determining dissociation constant of mono-acid (pK less than 7)by ion chromatogra-phy was developed. Using HC1 as a standard solution,the dissociation constant of HF and HNO2 was determined,and using HF as a standard solution,the dissociation constant of lactic acid ,acetic acid and formic acid was determined. The main error sources of the method were also discussed.

关 键 词：离子色谱法 一元弱酸 离解平衡 

分 类 号：O611.63[理学—无机化学]