Steric Field-Flow Fractionation: A New Method for Separating I to 100 μm Particles
- 1 October 1978
- journal article
- letter
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 13 (8) , 637-645
- https://doi.org/10.1080/01496397808057119
Abstract
Steric field-flow fractionation (steric FFF) is described as a high field limit of normal FFF that separates particles according to their diameter or radius. Retention equations are used to describe the phenomenon; these equations lead to the suggestion that steric FFF is applicable to particles from 1 to 100 μm as a minimum range. Conditions that control resolution are discussed, and fundamental similarities and differences between steric FFF on one hand and normal FFF and hydrodynamic chromatography on the other hand are noted. Optimum flow conditions are discussed and the complication of describing the migration of irregular particles is noted. Preliminary experiments with glass beads of 10 to 30 μm diameter demonstrate the existence of fractionation.Keywords
This publication has 4 references indexed in Scilit:
- Displacement and Dispersion of Particles of Finite Size in Flow Channels with Lateral Forces. Field-Flow Fractionation and Hydrodynamic ChromatographySeparation Science and Technology, 1978
- Hydrodynamic chromatography a technique for size analysis of colloidal particlesJournal of Colloid and Interface Science, 1974
- The conceptual basis of field-flow fractionationJournal of Chemical Education, 1973
- Field Flow FractionationSeparation and Purification Methods, 1973