Field-flow fractionation physicochemical parameter

In field-flow fractionation (FFF), retention can be related through a well-defined equation to the applied held and governing physicochemical parameters of the analyte. Therefore, in principle, FFF is a primary measurement technique that does not require calibration, but only if the governing physiochemical parameters are either the analyte parameters of interest or their relationship to the parameter of interest (such a molecular weight) is well deflned. 

The presence of surface phenomena in SdFFF, except for being a main source of error in calculating physicochemical quantities, could also be a basis for a new separation method called Potential-Barrier Field-Flow Fractionation, which can separate colloidal particles of different size or of any physicochemical parameter involved in the potential energy of interaction between the particles and the FFF channel wall. ° The same method can be also used for the concentration and analysis of dilute colloidal samples, such as those of natural water, where particles are present in low... 

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