Separation of unsaturated C18 fatty acids using perfluorinated-micellar electrokinetic chromatography: II) role of nano-structuration
Résumé
Three fatty acids were separated by micellar electrokinetic chromatography (MEKC) using ammonium perfluorooctanoate as volatile surfactant. Characterizations of both injection buffer and background electrolyte have been performed by complementary techniques including scattering experiments (light, x-rays) and NMR. Different structures have been observed such as small micelles at low methanol content and larger aggregates at high methanol content. In both cases fatty acids interact specifically with the perfluorinated self-assemblies due to different geometrical constraints and different interactions between polar head groups, ensuring separation by MEKC.
Domaines
Chimie analytiqueOrigine | Fichiers produits par l'(les) auteur(s) |
---|