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ERIC Number: EJ927042
Record Type: Journal
Publication Date: 2011-Apr
Pages: 3
Abstractor: As Provided
Reference Count: 16
ISSN: ISSN-0021-9584
Juicing the Juice: A Laboratory-Based Case Study for an Instrumental Analytical Chemistry Course
Schaber, Peter M.; Dinan, Frank J.; St. Phillips, Michael; Larson, Renee; Pines, Harvey A.; Larkin, Judith E.
Journal of Chemical Education, v88 n4 p496-498 Apr 2011
A young, inexperienced Food and Drug Administration (FDA) chemist is asked to distinguish between authentic fresh orange juice and suspected reconstituted orange juice falsely labeled as fresh. In an advanced instrumental analytical chemistry application of this case, inductively coupled plasma (ICP) spectroscopy is used to distinguish between the fresh and reconstituted samples based on their calcium and magnesium concentrations. Students working in teams are given the challenge posed in the case to the FDA chemist. They are charged with designing an experimental procedure, obtaining and analyzing the needed data, and writing a formal report. This case study requires students to conduct themselves in the same manner chemists would in the "real world" when faced with a new and challenging problem. Experimental procedures developed by student teams lead to the correct identification of unknowns a majority of the time. Assessment data indicate this case study elicited positive interest and interactions.
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A