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• Field_flow_fractionation abstract "Field-flow fractionation, abbreviated FFF, is a separation technique where a field is applied to a fluid suspension or solution pumped through a long and narrow channel, perpendicular to the direction of flow, in order to cause separation of the particles present in the fluid, dependent on their differing "mobilities" under the force exerted by the field. It was invented and first reported by J. Calvin Giddings. The method of FFF is unique to other separation techniques due to the fact that it can separate materials over a wide colloidal size range while maintaining high resolution. Although FFF is an extremely versatile technique, there is no "one size fits all" method for all applications. In field-flow fractionation the field can be asymmetrical flow through a semi-permeable membrane, gravitational, centrifugal, thermal-gradient, electrical, magnetic etc. In all cases, the separation mechanism is born from differences in particle mobility (electrophoretic, when the field is a DC electric field causing a transverse electrical current flow) under the forces of the field, in equilibrium with the forces of diffusion: an often-parabolic laminar-flow-velocity profile in the channel determines the velocity of a particular particle, based on its equilibrium position from the wall of the channel. The ratio of the velocity of a species of particle to the average velocity of the fluid is called the retention ratio.".
• Field_flow_fractionation thumbnail FFF_separation_principle_in_asymmetric_flow_field-flow_fractionation_(AF4).jpg?width=300.
• Field_flow_fractionation wikiPageExternalLink F1.
• Field_flow_fractionation wikiPageExternalLink www.postnova.com.
• Field_flow_fractionation wikiPageExternalLink cf2000-overview.html.
• Field_flow_fractionation wikiPageExternalLink fff-systems.html.
• Field_flow_fractionation wikiPageExternalLink 1458_chittleboroughd-1.gif.
• Field_flow_fractionation wikiPageExternalLink www.wyatt.com.
• Field_flow_fractionation wikiPageExternalLink www.wyatt.eu.
• Field_flow_fractionation wikiPageID "17032592".
• Field_flow_fractionation wikiPageRevisionID "597295319".
• Field_flow_fractionation hasPhotoCollection Field_flow_fractionation.
• Field_flow_fractionation subject Category:Charts.
• Field_flow_fractionation subject Category:Chemical_processes.
• Field_flow_fractionation subject Category:Diagrams.
• Field_flow_fractionation subject Category:Laboratory_techniques.
• Field_flow_fractionation type Ability105616246.
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• Field_flow_fractionation type LaboratoryTechniques.
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• Field_flow_fractionation comment "Field-flow fractionation, abbreviated FFF, is a separation technique where a field is applied to a fluid suspension or solution pumped through a long and narrow channel, perpendicular to the direction of flow, in order to cause separation of the particles present in the fluid, dependent on their differing "mobilities" under the force exerted by the field. It was invented and first reported by J. Calvin Giddings.".
• Field_flow_fractionation label "Feld-Fluss-Fraktionierung".
• Field_flow_fractionation label "Field flow fractionation".
• Field_flow_fractionation sameAs Feld-Fluss-Fraktionierung.
• Field_flow_fractionation sameAs m.041663s.
• Field_flow_fractionation sameAs Q782281.
• Field_flow_fractionation sameAs Q782281.
• Field_flow_fractionation sameAs Field_flow_fractionation.
• Field_flow_fractionation wasDerivedFrom Field_flow_fractionation?oldid=597295319.
• Field_flow_fractionation depiction FFF_separation_principle_in_asymmetric_flow_field-flow_fractionation_(AF4).jpg.
• Field_flow_fractionation isPrimaryTopicOf Field_flow_fractionation.