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Titolo:
Separation and selectivity of benzophenones in micellar electrokinetic chromatography using sodium dodecyl sulfate micelles or sodium cholate modified mixed micelles
Autore:
Lin, CE; Chen, MJ;
Indirizzi:
Natl Taiwan Univ, Dept Chem, Taipei 10764, Taiwan Natl Taiwan Univ Taipei Taiwan 10764 iv, Dept Chem, Taipei 10764, Taiwan
Titolo Testata:
JOURNAL OF CHROMATOGRAPHY A
fascicolo: 1-2, volume: 923, anno: 2001,
pagine: 241 - 248
Fonte:
ISI
Lingua:
ENG
Soggetto:
CAPILLARY-ZONE-ELECTROPHORESIS; HYDROGEN-BONDING INTERACTION; PREDICTING PEAK SYMMETRY; MIGRATION BEHAVIOR; COSMETIC PRODUCTS; LIQUID-CHROMATOGRAPHY; GAS-CHROMATOGRAPHY; MASS-SPECTROMETRY; SUNSCREEN AGENTS; OPTIMIZATION;
Keywords:
buffer composition; benzophenones; sodium dodecyl sulfate; sodium cholate; mixed micelles;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Lin, CE Natl Taiwan Univ, Dept Chem, 1 Roosevelt Rd Sect 4, Taipei 10764, Taiwan Natl Taiwan Univ 1 Roosevelt Rd Sect 4 Taipei Taiwan 10764 Taiwan
Citazione:
C.E. Lin e M.J. Chen, "Separation and selectivity of benzophenones in micellar electrokinetic chromatography using sodium dodecyl sulfate micelles or sodium cholate modified mixed micelles", J CHROMAT A, 923(1-2), 2001, pp. 241-248

Abstract

The separation and selectivity of nine benzophenones in micellar electrokinetic chromatography (MEKC) using sodium dodecyl sulfate (SDS) micelles or sodium cholate (SC) modified mixed micelles were investigated in the pH range 6.5-8.0. The results indicate that the combined effects of buffer pH andSC concentration can greatly affect the separation and selectivity of benzophenones, particularly for benzophenones possessing a hydroxyl substituentat the 4-position of the aromatic ring with respect to the carbonyl moietywhen using SDS-SC mixed micelles. Better separability can be obtained withSDS-SC mixed micelles than with SDS micelles. Complete separation of nine benzophenones in MEKC can be achieved with an appropriate choice of buffer pH and the concentration of SIDS micelles or SC modified mixed micelles. The dependence of the migration order of those benzophenones based on their structures and solute-micelle interactions is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/08/20 alle ore 22:31:00