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ERIC Number: EJ1173089
Record Type: Journal
Publication Date: 2018-Mar
Pages: 7
Abstractor: As Provided
ISSN: ISSN-0021-9584
Physicians as the First Analytical Chemists: Gall Nut Extract Determination of Iron Ion (Fe[superscript 2+]) Concentration
van Opstal, Mary T.; Nahlik, Philip; Daubenmire, Patrick L.; Fitch, Alanah
Journal of Chemical Education, v95 n3 p456-462 Mar 2018
Many students enroll in college general chemistry with an interest in a medical career. In those (and alternative) careers, they will need to make critical decisions about data and how that data are acquired. A significant portion of introductory lab experiments are, in principle, but not necessarily in practice, devoted to understanding how chemical information is gained and how it is deemed reliable. Here we report on a laboratory experiment that is presented as a guided inquiry investigation grounded in the history of science and the link between early medicine and quantitative data. Oak gall extract is used to quantitatively determine the amount of iron present in a water sample using UV-vis absorbance. In this experiment, students are introduced to the Beer-Lambert law, calibration curves, and the reading of UV-vis spectra.
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
Identifiers - Location: Illinois (Chicago)
Grant or Contract Numbers: N/A