硅酸及其盐的研究 ⅩⅩⅠ.三甲基硅烷化-气相色谱法测定单硅酸的离解常数  

STUDIES ON SILICIC ACID AND ITS SALTS XXI. DETERMINATION OF DISSOCIATION CONSTANT OFMONOSILICIC ACID THRO TRIMETHYLSILYLATION-GASCHROMATOGRAPHY

作　　者：陈荣三[1] 杨宇翔[1] 郭腊梅 王占文 柳海澄[1] 戴安邦[1] 

机构地区：[1]南京大学配位化学研究所,南京210008

出　　处：《无机化学学报》1990年第1期87-88,共2页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金

摘　　要：单硅酸的离解常数是表征其基本性质的重要数据,前人已有不少工作,但由于测定的方法和实验条件不同,所得数据很不一致。本实验室曾用“N’曲线法测得了单硅酸的各级离解常数,由于这些常数系在单硅酸到达多硅酸直至凝胶的过程中所测得,故和公认的单硅酸标准离解常数差别很大,只能称为胶凝离解常数。On account of the ease of polymerization of silicic acid, it is difficult to make an accurate determination of dissociation constant of monosilicic acid. So the values obtained by different investigators usually do not agree. By use of trimethylsilylation process, standard dissociation constant of monosilicic acid has been determined. And by ion strength extrapolation, thermodynamic dissociation constant has also been determined. These constants are in good agreement with the accepted values.

关 键 词：单硅酸 离解常数 TMS-GC法 

分 类 号：O613.72[理学—无机化学]