ERIC Number: EJ826721
Record Type: Journal
Publication Date: 2008-May
Pages: 3
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Size Exclusion Chromatography: An Experiment for High School and Community College Chemistry and Biotechnology Laboratory Programs
Brunauer, Linda S.; Davis, Kathryn K.
Journal of Chemical Education, v85 n5 p683-685 May 2008
A simple multiday laboratory exercise suitable for use in a high school or community college chemistry course or a biotechnology advanced placement biology course is described. In this experiment students gain experience in the use of column chromatography as a tool for the separation and characterization of biomolecules, thus expanding their exposure to chromatographic procedures beyond those more commonly employed in the high school environment (e.g., paper or thin-layer chromatography). Students chromatographically separate a standard mixture of three highly colored compounds of varying molar mass (vitamin B[subscript 12], bovine hemoglobin, and blue dextran) on a short Sephacryl S-300 size exclusion column, determining their relative elution volumes. Students later apply a sample of the enzyme wheat germ acid phosphatase to the same column, collect eluant fractions and determine the elution position of the enzyme by use of a rapid and simple enzyme assay carried out in a 96 well plate. The relative molar mass of the enzyme is estimated by comparison of its elution volume to the elution profile of the molecules in the standard mixture. (Contains 2 figures.)
Descriptors: Advanced Placement, Chemistry, Laboratories, Biotechnology, Biology, Biochemistry, Educational Environment, Science Instruction, College Science, High Schools, Comparative Analysis, Animals
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: jchemed@egpp.com; Web site: http://www.jce.divched.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools; Two Year Colleges
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A