| 刚果红显色法测定羧甲基壳聚糖含量 |
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| 引用本文： | 刘树恒,王立霞,刘长霞,王瑜.刚果红显色法测定羧甲基壳聚糖含量[J].化学通报,2012(4):376-378. |
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| 作者姓名： | 刘树恒 王立霞 刘长霞 王瑜 |
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| 作者单位： | 沧州师范学院化学与环境科学系 |
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| 摘 要： | 在pH=9.0的NH3-NH4Cl缓冲溶液中羧甲基壳聚糖与刚果红形成稳定的红色物质;在530nm处具有最大吸收,其吸光度与羧甲基壳聚糖浓度在1.00～40.00mg/L范围内具有良好的线性关系,表观百分吸光系数ε=49.20mL/g.cm,方法用于羧甲基壳聚糖样品的测定,回收率在98.2%～101.8%之间,测定值的标准偏差在0.41%～2.5%之间。
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| 关 键 词： | 羧甲基壳聚糖 刚果红 显色反应 测定 |
Determination of Carbomethyl-chitosan by Color Reaction with Congo-Red |
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| Liu Shuheng,Wang Lixia,Liu Changxia,Wang Yu.Determination of Carbomethyl-chitosan by Color Reaction with Congo-Red[J].Chemistry,2012(4):376-378. |
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| Authors: | Liu Shuheng Wang Lixia Liu Changxia Wang Yu |
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| Institution: | (Department of Chemistry and Environmental science,Cangzhou Normal College,Cangzhou 061000) |
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| Abstract: | The experimental results showed that Congo Red and carbomethyl-chitosan produced a sensitive color reaction under the condition of pH=9 NH3-NH4Cl buffer solution.The biggest absorption wavelength was at 530nm.It was found that the absorbance(A) had good linear relationship with concentration of carbomethyl-chitosan from 1.00 mg/L to 40.00 mg/L.The method can be applied to determine carbomethyl-chitosan content in compound samples. |
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| Keywords: | Carbomethyl-chitosan Congo red Color reaction Determination |
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