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Comparison of superficially porous and fully porous silica supports used for a cyclofructan 6 hydrophilic interaction liquid chromatographic stationary phase.
Dolzan, Maressa D; Spudeit, Daniel A; Breitbach, Zachary S; Barber, William E; Micke, Gustavo A; Armstrong, Daniel W.
Afiliação
  • Dolzan MD; Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA; Department of Chemistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
  • Spudeit DA; Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA; Department of Chemistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
  • Breitbach ZS; Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA.
  • Barber WE; Agilent Technologies Inc., 2850 Centerville Road, Wilmington, DE 19808, USA.
  • Micke GA; Department of Chemistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
  • Armstrong DW; Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA; AZYP LLC, 700 Planetarium Place, Arlington, TX, 76019, USA. Electronic address: sec4dwa@uta.edu.
J Chromatogr A ; 1365: 124-30, 2014 Oct 24.
Article em En | MEDLINE | ID: mdl-25260342
A new HILIC stationary phase comprised of native cyclofructan-6 (CF6) bonded to superficially porous silica particles (2.7µm) was developed. Its performance was evaluated and compared to fully porous silica particles with 5µm (commercially available as FRULIC-N) and 3µm diameters. Faster and more efficient chromatography was achieved with the superficially porous particles (SPPs). The columns were also evaluated in the normal phase mode. The peak efficiency, analysis time, resolution, and overall separation capabilities in both HILIC and normal phase modes were compared. The analysis times using the superficially porous based column in HILIC mode were shorter and the theoretical plates/min were higher over the entire range of flow rates studied. The column containing the superficially porous particles demonstrated higher optimum flow rates than the fully porous particle packed columns. At higher flow rates, the advantages of the superficially porous particles was more pronounced in normal phase separations than in HILIC, clearly demonstrating the influence that the mode of chromatography has on band broadening. However, the minimum reduced plate heights (hmin) were typically lower in HILIC than in the normal phase mode. Overall, the superficially porous particle based CF6 column showed clear advantages over the fully porous particle columns, in terms of high throughput and efficient separations of polar compounds in the HILIC mode.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cromatografia Líquida / Dióxido de Silício / Frutanos Idioma: En Revista: J Chromatogr A Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cromatografia Líquida / Dióxido de Silício / Frutanos Idioma: En Revista: J Chromatogr A Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda