Enantiomers separation by nano-liquid chromatography: use of a novel sub-2 micron vancomycin silica hydride stationary phase. (Articolo in rivista)

Type
Label
  • Enantiomers separation by nano-liquid chromatography: use of a novel sub-2 micron vancomycin silica hydride stationary phase. (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.chroma.2015.01.015 (literal)
Alternative label
  • S. Rocchi, A. Rocco, J. J. Pesekc, M. T. Matyskac, D. Capitani,S. Fanali (2015)
    Enantiomers separation by nano-liquid chromatography: use of a novel sub-2 micron vancomycin silica hydride stationary phase.
    in Journal of chromatography (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Rocchi, A. Rocco, J. J. Pesekc, M. T. Matyskac, D. Capitani,S. Fanali (literal)
Pagina inizio
  • 149 (literal)
Pagina fine
  • 159 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 1381 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 10 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche,Roma, Italia Dipartimento di Scienze fisiche e Chimiche, Università dell'Aquila, Italia Department of Chemistry, San José State University, San José, CA, United States (literal)
Titolo
  • Enantiomers separation by nano-liquid chromatography: use of a novel sub-2 micron vancomycin silica hydride stationary phase. (literal)
Abstract
  • A novel sub-2 ?micron chiral stationary phase (CSP) was prepared immobilizing vancomycin onto 1.8 ?m diolhydride-based silica particles. The CSP was packed into fused silica capillaries of 75 ?m i.d. with a length of11 cm and evaluated by means of nano-liquid chromatography (nano-LC) using model compounds of bothpharmaceutical and environmental interest (some non-steroidal anti-inflammatory drugs, ?-blockersand herbicides). The study of the effect of the linear velocity of the mobile phase on chromatographicefficiency showed good enantioresolutions up to a value of 5.11 at the optimal linear velocity with efficien-cies in terms of number of plates per meter in the range 51,650-68,330. The results were compared withthe ones obtained employing 5 ?m vancomycin modified diol-silica particles packed in capillaries of thesame i.d. For the acidic analytes the sub-2 ?m CSP showed better performances, the baseline chiral sepa-ration of several studied compounds occurred in an analysis time of less than 3 min. Column-to-columnpacking reproducibility (n = 3) expressed as relative standard deviation was in the range 2.2-5.8% and0.5-7.7% for retention times and peak areas, respectively. (literal)
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