| 阳离子表面活性剂与酚红的显色反应及其分析应用 |
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| 引用本文： | 黄传敬.阳离子表面活性剂与酚红的显色反应及其分析应用[J].光谱学与光谱分析,2000,20(2):252-255. |
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| 作者姓名： | 黄传敬 |
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| 作者单位： | 淮北煤炭师范学院化学系 |
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| 摘 要： | 研究了阳离子表面活性剂（ＣＳＡＡ）溴化十六烷基三甲铵（ＣＴＡＢ）、溴化十六烷基吡啶（ＣＰＢ）在水溶液中与溴酚红（ＢＰＲ）的显色反应。发现在ＰＨ５．０～６．０范围内，ＣＳＡＡ单体与ＢＰＲ形成离子缔合物（缔合比为３：２），可用于微是ＣＳＡＡ及ＣＳＡＡ的临界胶束浓度（ＣＭＣ）的测定。本文还研究了显色２的适宜条件、分析特征，并讨论了反应机理。
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| 关 键 词： | 显色反应 阳离子表面活性剂 溴酚红 测定 |
Color reaction of cationic surfactants on bromphenol red and its analytical applications] |
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| C Huang.Color reaction of cationic surfactants on bromphenol red and its analytical applications][J].Spectroscopy and Spectral Analysis,2000,20(2):252-255. |
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| Authors: | C Huang |
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| Institution: | Department of Chemistry, Huaibei Coal Mining Teachers College, 235000 Huaibei. |
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| Abstract: | The suitable conditions, mechanism, characteristics and analytical applications of bromphenol red (BPR) reacting on cationic surfactants (CSAA) such as cetylpyridinium bromide (CPB) or cetyltrimetryl ammonium bromide (CTAB) were investigated. The results show that the single molecular CSAA reacts on BPR to form an ion-associate complex at pH 5.0-6.0, and its molar ratio (CSAA:BPR) is 3:2. Based on this color reaction, the critical micelle concentration (CMC) of CTAB and CPB was determined, and the possibility for the determination of trace CTAB and CPB were proposed. |
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