Abstract
The influence of different solute−micelle interactions on micellar solubilization is studied by using linear solvation energy relationship (LSER) modeling. The LSER results for six anionic micellar systems demonstrate that the migration behavior of neutral species in micellar electrokinetic chromatography (MEKC) is mainly determined by their molar volume and their hydrogen bond acceptor ability. Their polarity and hydrogen bond donor ability are shown to be of minor importance with these anionic surfactants. Large differences in selectivity were observed for sodium dodecyl sulfate (SDS) and mixed SDS/Brij 35 micellar systems, primarily due to different hydrogen bonding characteristics. It is demonstrated that retention indexes can be applied for quantitative characterization of pseudostationary phases in MEKC in a way similar to the use of the Rohrschneider−McReynolds scale in GC. This method facilitates classification of pseudostationary phases according to several solvatochromic quantities with a limite...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
