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ERIC Number: EJ820896
Record Type: Journal
Publication Date: 2007-Dec
Pages: 8
Abstractor: As Provided
Reference Count: 36
ISSN: ISSN-0021-9584
Illustrating Some Principles of Separation Science through Gravitational Field-Flow Fractionation
Beckett, Ronald; Sharma, Reshmi; Andric, Goja; Chantiwas, Rattikan; Jakmunee, Jaroon; Grudpan, Kate
Journal of Chemical Education, v84 n12 p1955-1962 Dec 2007
Particle separation is an important but often neglected topic in undergraduate curricula. This article discusses how the method of gravitational field-flow fractionation (GrFFF) can be used to illustrate many principles of separation science and some fundamental concepts of physical chemistry. GrFFF separates particles during their elution through a flat rectangular channel. The mechanism can be readily understood in terms of gravitational settling, laminar fluid flow, and hydrodynamic lift forces. The article outlines material suitable for lecture and laboratory courses in analytical and physical chemistry. A tested laboratory experiment is available. (Contains 10 figures.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A