OVERVIEW OF FIELD-FLOW FRACTIONATION

Foremost among J.C. Gidding's many contributions to separation science is the invention and development of field-flow fractionation. This ar ticle is a nonmathematical overview of field-flow fractionation with a discussion of general principles and the basic subtechniques of this separation method. A brief review is given of some of the molecular an d particle separations and characterizations which have been and are c urrently being used which illustrate the broad potential of this metho d. Since field-flow fractionation requires small samples for optimum p erformance, the use of SPLITT for obtaining sized materials in up to g ram quantities is also discussed. (C) 1997 John Wiley & Sons, Inc.