ERIC Number: EJ927042
Record Type: Journal
Publication Date: 2011-Apr
Abstractor: As Provided
Reference Count: 16
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.
Descriptors: Chemistry, College Science, Case Studies, Public Health, Federal Regulation, Government Role, Food, Deception, Government Employees, Data Analysis, Spectroscopy, Research Methodology, Comparative Analysis, Cooperative Learning, Experiential Learning, Independent Study
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Authoring Institution: N/A