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首页> 外文期刊>Electrophoresis: The Official Journal of the International Electrophoresis Society >Comparison and prediction of the retention in micellar electrokinetic chromatography and microemulsion electrokinetic chromatography for disubstituted benzenes.
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Comparison and prediction of the retention in micellar electrokinetic chromatography and microemulsion electrokinetic chromatography for disubstituted benzenes.

机译:比较和预测胶束电动色谱法和微乳液电动色谱法对二取代苯的保留。

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摘要

Retention index (I), rather than retention factor (k), was found to be a more reasonable parameter for comparison of the relative affinity of disubstituted benzenes in MEEKC and MEKC, due to independent of I with the SDS surfactant concentration. MEKC and MEEKC may give similar or different I values, depending on types of moieties. With known I and K(ow) for alkylbenzenes as references in MEKC and MEEKC, the values of K(ow) for disubstituted benzenes can be estimated from the observed I values, where K(ow) is the octanol-water distribution constant. In addition, a group additive approach can be used to predict I for disubstituted benzenes with different moieties from the average observed I for the disubstituted benzenes with same moieties. However, electronic effects and/or intramolecular interaction may result in the different observed I from prediction.
机译:发现保留指数(I),而不是保留因子(k),是比较二取代苯在MEEKC和MEKC中的相对亲和力的更合理的参数,因为它与SDS表面活性剂浓度无关。根据部分的类型,MEKC和MEEKC可能会给出相似或不同的I值。以已知的烷基苯的I和K(ow)作为MEKC和MEEKC的参考,可以从观察到的I值估算二取代苯的K(ow)值,其中K(ow)是辛醇-水的分布常数。另外,可以使用基团加和法从具有相同基团的二取代苯的平均观察到的I来预测具有不同基团的二取代苯的I。但是,电子效应和/或分子内相互作用可能导致观察到的I与预测值不同。

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