Nonaqueous capillary electrophoretic behavior of 2-aryl propionic acids in the presence of an achiral ionic liquid - A chemometric approach

Francois, Yannis; Varenne, Anne; Juillerat, Emilie; Servais, Anne-Catherine; Chiap, Patrice; Gareil, Pierre

doi:10.1016/j.chroma.2006.10.063

Article (Scientific journals)

Nonaqueous capillary electrophoretic behavior of 2-aryl propionic acids in the presence of an achiral ionic liquid - A chemometric approach

Francois, Yannis; Varenne, Anne; Juillerat, Emilie et al.

2007 • In Journal of Chromatography. A, 1138 (1-2), p. 268-275

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/18725

DOI
10.1016/j.chroma.2006.10.063

PubMed
17113588

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Keywords :

ionic liquids; nonaqueous capillary electrophoresis; experimental design; ion-pairing

Abstract :

[en] Ionic liquids (ILs) appear really attractive as electrolyte additives in nonaqueous capillary electrophoresis (NACE). These salts may offer new possibilities of interactions to modulate analyte effective mobilities. The presence of 1-n-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (BMIM NTf2) in acetonitrile/alcohol background electrolytes (BGEs) was investigated in this work. The aim of this study was to elucidate the influence of the IL concentration on the electrophoretic behavior of four arylpropionic acids and to identify the interactions between the analytes and the 1L cation. The influence on mobility of the IL concentration, the nature and the proportion of the organic solvents, and the concentration of the ionic components of the BGE was first studied by a univariate approach. A four-factor D-optimal experimental design was then applied to provide a deeper insight into analyte interaction with IL cation present both free in BGE and adsorbed onto the capillary wall. (c) 2006 Elsevier B.V. All rights reserved.

Disciplines :

Chemistry
Biochemistry, biophysics & molecular biology

Author, co-author :

Francois, Yannis; Ecole Nationale Supérieure de Chimie de Paris - ENSCP > CNRS UMR 7575 > Laboratory of Electrochemistry and Analytical Chemistry

Varenne, Anne; Ecole Nationale Supérieure de Chimie de Paris - ENSCP > CNRS UMR 7575 > Laboratory of Electrochemistry and Analytical Chemistry

Juillerat, Emilie; Ecole Nationale Supérieure de Chimie de Paris - ENSCP > CNRS UMR 7575 > Laboratory of Electrochemistry and Analytical Chemistry

Servais, Anne-Catherine ; Université de Liège - ULiège > Département de pharmacie > Analyse des médicaments

Chiap, Patrice ; Université de Liège - ULiège > Département de pharmacie > Analyse des médicaments

Gareil, Pierre; Ecole Nationale Supérieure de Chimie de Paris - ENSCP > CNRS UMR 7575 > Laboratory of Electrochemistry and Analytical Chemistry

Language :

English

Title :

Nonaqueous capillary electrophoretic behavior of 2-aryl propionic acids in the presence of an achiral ionic liquid - A chemometric approach

Publication date :

05 January 2007

Journal title :

Journal of Chromatography. A

ISSN :

0021-9673

eISSN :

1873-3778

Publisher :

Elsevier Science Bv, Amsterdam, Netherlands

Volume :

1138

Issue :

1-2

Pages :

268-275

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 13 August 2009

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