Determination of substitution degree of N-succinyl-chitosan by conductometric titration

HUO Xiu-ying; ZHANG Xiao-hua; WU Qing

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Determination of substitution degree of N-succinyl-chitosan by conductometric titration

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- Determination of substitution degree of N-succinyl-chitosan by conductometric titration
- Journal of Beijing University of traditional Chinese Medicine Vol. 0, Issue 10, Pages: 700-702(2007)
- 作者机构：
  
  1. 北京中医药大学中药学院
  2. 北京中医药大学中药学院,北京,100102
- 作者简介：
- 基金信息：
- DOI：
  CLC： R284.2
- Published：2007
- 稿件说明：
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HUO Xiu-ying, ZHANG Xiao-hua, WU Qing. Determination of substitution degree of N-succinyl-chitosan by conductometric titration[J]. Journal of Beijing University of traditional Chinese Medicine, 2007, 0(10): 700-702.
DOI：

HUO Xiu-ying, ZHANG Xiao-hua, WU Qing. Determination of substitution degree of N-succinyl-chitosan by conductometric titration[J]. Journal of Beijing University of traditional Chinese Medicine, 2007, 0(10): 700-702. DOI：

摘要

目的建立电导滴定法测定N-琥珀酰壳聚糖取代度的方法。方法用NaOH标准溶液滴定溶解于过量HCl标准溶液中的样品

测定电导率值

计算取代度。结果该方法的RSD为1.45%

改变实验条件

取代度无显著性差异。结论该方法操作简便、快捷

重现性好。

Abstract

Objective To establish a method for determinating the substitution degree of N-succinyl-chitosan by conductometric titration.Method The sample of N-succinyl-chitosan was dissolved in excess HCl

which then was titrated by standard NaOH.The conductivity of the solution was detected and the substitution degree of N-succinyl-chitosan was calculated.Result The RSD of the method was 1.45%.The substitution degree had no significant difference when the conditions of the experiment were changed.Conclusion The method is easy with a good reproducibility

and prompt to be performed.

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