| PAZOUREK, Jiří, Karl-Gustav WAHLUND a Josef CHMELÍK. Effect of flowrate and ionic strength on retention of nonporous micron-sized silica gel particles in gravitational field-flow fractionation. Journal of Microcolumn Separations. Wiley, 1996, roč. 8, č. 5, s. 331-338. ISSN 1040-7685. Dostupné z: https://dx.doi.org/10.1002/mcs.1220080502. |
Další formáty:
BibTeX
LaTeX
RIS
@article{2340310,
author = {Pazourek, Jiří and Wahlund, KarlandGustav and Chmelík, Josef},
article_number = {5},
doi = {http://dx.doi.org/10.1002/mcs.1220080502},
keywords = {gravitational field-flow fractionation lift-forces electrostatic forces silica gel particles hydrodynamic lift forces red-blood-cells chromatographic supports separation elution channels relaxation migration density},
language = {eng},
issn = {1040-7685},
journal = {Journal of Microcolumn Separations},
title = {Effect of flowrate and ionic strength on retention of nonporous micron-sized silica gel particles in gravitational field-flow fractionation},
url = {https://onlinelibrary.wiley.com/doi/10.1002/mcs.1220080502},
volume = {8},
year = {1996}
}
TY - JOUR
ID - 2340310
AU - Pazourek, Jiří - Wahlund, Karl-Gustav - Chmelík, Josef
PY - 1996
TI - Effect of flowrate and ionic strength on retention of nonporous micron-sized silica gel particles in gravitational field-flow fractionation
JF - Journal of Microcolumn Separations
VL - 8
IS - 5
SP - 331-338
EP - 331-338
PB - Wiley
SN - 10407685
KW - gravitational field-flow fractionation lift-forces electrostatic forces silica gel particles hydrodynamic lift forces red-blood-cells chromatographic supports separation elution channels relaxation migration density
UR - https://onlinelibrary.wiley.com/doi/10.1002/mcs.1220080502
N2 - Retention of nonporous micron-sized silica gel particles in gravitational field-flow fractionation (GFFF) was investigated with respect to the activity of the hydrodynamic lift-forces and surface forces. The hydrodynamic lift-forces act near the channel wall in the same direction as repulsive electrostatic forces against the gravity so that the particles are focused. Although a complete quantitative description of the hydrodynamic lift-forces, which would enable prediction of the retention time, is not yet available, the experiments show that the magnitude of both forces is comparable with the particle effective weight and that the forces can be used for efficient separation of micron-sized particles. Higher ionic strengths of the carrier liquid attained by addition of NaCl decrease the repulsive electrostatic force and dramatically influence retention of the particles, yet to be reported in GFFF.
ER -
PAZOUREK, Jiří, Karl-Gustav WAHLUND a Josef CHMELÍK. Effect of flowrate and ionic strength on retention of nonporous micron-sized silica gel particles in gravitational field-flow fractionation. \textit{Journal of Microcolumn Separations}. Wiley, 1996, roč.~8, č.~5, s.~331-338. ISSN~1040-7685. Dostupné z: https://dx.doi.org/10.1002/mcs.1220080502.
|
