摘要
本文用线性滴定法测定了壳聚糖的脱乙酰度,并同时测定了壳聚糖中胺基的表现离解常数。对文献中的两个计算脱乙酰度的公式,给出了具体的含义,修正了公式中的错误。重复测定(n=5)不同粘度的样品的结果表明相对标准偏差小于1.4%。同时讨论了脱乙酰度与壳聚糖的粘度、胺基表观离解常数之间的关系。
In this paper,the degree of deacetylation of Chitosan and its conditional dissocia-tion constant of amino-group were deter-mined simultaneouslyl Two formulae cited inthe literature were discussed and the mistakeexisting in one of them was revised. The re-sults determined repeatedly(n =5) for sam-ples of chitosan with different viscositiesshowed that the relative standard deviationis less than 1.4%。 At the same time ,the re-lationship between the degree of deacetyla-tion and viscosity,and between the degree ofdeacetvlation and the conditional dissociationconstant of amino-group were also dis-cussed.
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第2期21-24,共4页
Chinese Journal of Analysis Laboratory
关键词
滴定法
壳聚糖
脱乙酰度
胺基
离解常数
粘度
Deacetylation degree
condi-tional dissociation constant
amino group
chitosan:linear titrimetry