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线性滴定法同时测定壳聚糖的脱乙酰度及其胺基的表观离解常数 被引量:9

Simultaneous Determination of Degreeof Deacetylation and Conditional Dissocia-tion Constant of Aminogroup of Chitosan byLinear Titrimetric Method
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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
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参考文献1

  • 1林瑞洵,化学通报,1992年,3卷,39页

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