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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >The effect of anionic and cationic surfactants on indicators and measurement of dissociation constants with two different methods
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The effect of anionic and cationic surfactants on indicators and measurement of dissociation constants with two different methods

机译：阴离子和阳离子表面活性剂对指示剂的影响以及两种不同方法的解离常数的测量

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摘要

The effects of cationic cetyltrimethylammonium bromide (CTAB), hexadecylpyridinum chloride (HDPC) and anionic sodium dodecylsulphate (SDS) surfactants on dissociation constants and transition intervals of methyl red, methyl orange and cresol red were studied spectrophotometrically. The results show that all studied indicators strongly interacted with cationic micelles (CTAB and HDPC). In the case of methyl red, relatively strong interaction with anionic surfactant (SDS) was obtained. However, no effect of SDS on dissociation constants of cresol red and methyl orange was observed. The dissociation constants of indicators were calculated with both the proposed and known chemometric (DATAN) method with a reasonable agreement on the data achieved. (C) 2006 Elsevier B.V. All rights reserved.
机译：分光光度法研究了阳离子十六烷基三甲基溴化铵（CTAB），十六烷基吡啶鎓氯化物（HDPC）和阴离子十二烷基硫酸钠（SDS）表面​​活性剂对甲基红，甲基橙和甲酚红的离解常数和过渡区间的影响。结果表明，所有研究指标均与阳离子胶束（CTAB和HDPC）强烈相互作用。在甲基红的情况下，与阴离子表面活性剂（SDS）的相互作用较强。然而，没有观察到SDS对甲酚红和甲基橙的解离常数的影响。指示剂的解离常数是用拟议的和已知的化学计量学（DATAN）方法计算的，对获得的数据有合理的认识。 （C）2006 Elsevier B.V.保留所有权利。

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