Liquid exclusion-adsorption chromatography: new technique for isocratic separation of nonionic surfactants I. Retention behaviour of fatty alcohol ethoxylates

Authors
Trathnigg, B Gorbunov, A
Citation
B. Trathnigg et A. Gorbunov, Liquid exclusion-adsorption chromatography: new technique for isocratic separation of nonionic surfactants I. Retention behaviour of fatty alcohol ethoxylates, J CHROMAT A, 910(2), 2001, pp. 207-216
Citations number
48
Categorie Soggetti
Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF CHROMATOGRAPHY A → ACNP
Volume
910
Issue
2
Year of publication
2001
Pages
207 - 216
Database
ISI
SICI code
Abstract
A new technique of liquid chromatography is described, which allows a basel ine separation of fatty alcohol ethoxylates with 15-20 ethylene oxide units under isocratic conditions. The new method is based on a combination of tw o different chromatographic modes for the individual structural units: size exclusion for the poly(oxyethylene) chain and adsorption interaction for t he hydrophobic end fragments. A theory is provided for this mixed exclusion -adsorption mode of Liquid chromatography. Chromatographic data are found t o be in a good agreement with this theory. (C) 2001 Elsevier Science B.V. A ll rights reserved.