| 阴离子表面活性剂的测定方法——混合指示剂程序加入法 |
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| 引用本文： | 唐凯,俞稼镛. 阴离子表面活性剂的测定方法——混合指示剂程序加入法[J]. 兰州大学学报(自然科学版), 2000, 0(4) |
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| 作者姓名： | 唐凯 俞稼镛 |
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| 作者单位： | 兰州大学化学化工学院!甘肃兰州730000(唐凯),中国科学院感光化学研究所!北京100101(俞稼镛) |
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| 基金项目： | 国家重点科技攻关项目!(75140 3) |
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| 摘 要： | 在原有的混合指示剂 (MIT)法的基础上 ,提出一种改进的测定阴离子表面活性剂的两相混合指示剂程序加入 (MIST)法 ,并分别在纯体系和复杂体系中对两种方法进行了比较 .结果表明由于 MIST法减少了滴定过程中的化学反应和化合物在两相之间的相转移 ,因而减小了相应的影响因素 .在稀阴离子表面活性剂溶液的分析中其标准偏差 s不大于 0 .4 % .
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| 关 键 词： | 混合指示剂程序加入法 阴离子表面活性剂 百里酚蓝 次甲基蓝 |
An Improved Method to Determine Anionic Surfactant in Complex System |
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| Tang Kai,Yu Jiayong. An Improved Method to Determine Anionic Surfactant in Complex System[J]. Journal of Lanzhou University(Natural Science), 2000, 0(4) |
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| Authors: | Tang Kai Yu Jiayong |
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| Affiliation: | Tang Kai1,Yu Jiayong |
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| Abstract: | In a two phase system, a mixed indicator sequence titration (MIST) method is put forward to analyze anionic surfactants. It is improved from the two phase mixed indicator titration (MIT) method given by Li and compared with MIT method in the systems of pure anionic surfactants and complex ones. The steps of the reactions are less and so is the transference between two phases of MIST method in titration process, so it can reduce the influence of other ions and components. The standard derivation is not as big as 0.4% in determining diluted solutions of anionic surfactants. |
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| Keywords: | mixed indicator sequence titration anionic surfactant thymol blue methylene blue |
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