ERIC Number: EJ1491077
Record Type: Journal
Publication Date: 2025-Sep
Pages: 6
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: EISSN-1938-1328
Available Date: 0000-00-00
Comparison of qNMR Spectroscopy and an Enzyme-Based Standard Method for the Determination of Ethanol in Nonalcoholic Beer
JessicaL. Bluitt1; Elisa M. Woolridge1; Neil Fitzgerald1
Journal of Chemical Education, v102 n9 p4109-4114 2025
The concept of using appropriate statistical methods to compare results from a newly proposed analytical method to a standard method can be poorly understood among undergraduate students. We developed a learning activity for an undergraduate analytical chemistry course to provide a practical demonstration of method comparison. The activity consists of students collecting data on the ethanol content of nonalcoholic beers via a quantitative NMR spectroscopic method, using a benchtop NMR, and an enzyme-based UV spectrophotometric method using a commercially available enzyme assay kit. Students are then able to apply a simple statistical test to determine whether the two methods are equivalent. The activity was successfully incorporated into a course. Students were able to measure ethanol concentrations using both methods and compare data using a Student's t-test. Survey results indicate that the students gained a better understanding of the use of statistics in evaluating an analytical method.
Descriptors: Science Instruction, Chemistry, Spectroscopy, College Science, Undergraduate Students, Science Experiments
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: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: 1Department of Chemistry, Biochemistry, & Physics, Marist University, Poughkeepsie, New York, United States

Peer reviewed
Direct link
