Summary
The particle realization of electrochromatography on capillaries packed with 1.5 μm ODS-modified non-porous silica spheres is demonstrated. In order to realize stable separation conditions it is crucial to add sodium dodecylsulphate (SDS) to the mobile phase and to pressurize both buffer vials at 10 bar. The presence of SDS stabilizes the current and makes the electro-osmotic flow in the packing more uniform so that no air bubbles are generated at high field strengths. The capillary columns are extremely efficient and on a 24 cm long column about 120,000 plates can be generated (a reduced plate height of about 1.3). The columns are very stable and no loss in efficiency was found after using a column continuously for two months.
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References
J. F. K. Huber, Ber. Bunsenges. Physik. Chem.77, 179 (1973).
J. H. Knox, M. Saleem, J. Chromatogr. Sci.7, 614 (1969).
H. Giesche, K. K. Unger, U. Esser, B. Eray, U. Trudinger, J. N. Kinkel J. Chromatogr.465, 39 (1989).
V. Pretorius, B. J. Hopkins, J. D. Schieke, J. Chromatogr.99, 23 (1974).
J. H. Knox, I. H. Grant Chromatographia24, 135 (1987).
J. H. Knox, I. H. Grant, Chromatographia32, 317 (1991).
N. W. Smith, M. B. Evans, Chromatographia38, 649 (1994).
H. Rebscher, U. Pyell, Chromatographia38, 737 (1994).
R. J. Boughtflower, T. Underwood, C. J. Paterson, Chromatographia40, 329 (1995).
S. E. van den Bosch, H. Heemstra, J. C. Kraak, H. Poppe, J. Chromatogr. A755, 165 (1996).
R. J. Boughtflower, T. Underwood, J. Maddin, Chromatographia41, 398 (1995).
C. Yan, R. Dadoo, H. Zhao, R. N. Zare, D. J. Rakestraw, Anal. Chem.67, 2026 (1995).
M. M. Dittmann, K. Wienand, F. Bek, G. P. Rozing, LC-GC13, (10) 800 (1995).
M. M. Dittman, G. P. Rozing, J. Chromatogr. A744, 63. (1996).
F. Lelievre, C. Yan, R. N. Zare, P. Garei, J. Chromatogr. A723, 145, (1996).
M. T. Dulay, C. Yan, D. J. Rakestraw, R. N. Zare, J. Chromatogr. A725, 361 (1996).
H. Yamamoto, J. Baumann, F. Erni, J. Chromatogr.593, 313 (1992).
J. H. Knox, G. Laird, J. Chromatogr.122, 17 (1976).
J. C. Kraak, K. M. Jonker, J. F. K. Huber, J. Chromatogr.142, 671 (1977).
E. A. G. Aniansson, S. N. Wall, M. Almgren, H. Hoffmann, I. Kielmann, W. Ulbricht, R. Zana, J. Lang, C. Tondre, J. Phys. Chem.80, 905 (1976).
S. Terabe, K. Otsuka, K. Ichikawa, A. Tsuchiya, T. Ando, Anal. Chem.56, 111 (1984).
P. Delahay, Double Layer and Electrode Kinetics, Wiley-Interscience, New York, 1965.
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Seifar, R.M., Kok, W.T., Kraak, J.C. et al. Capillary electrochromatography with 1.5 μm ODS-modified non-porous silica spheres. Chromatographia 46, 131–136 (1997). https://doi.org/10.1007/BF02495322
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DOI: https://doi.org/10.1007/BF02495322