ERIC Number: EJ1441741
Record Type: Journal
Publication Date: 2022-Jul
Pages: 7
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: EISSN-1938-1328
Fun with Smartphones: Handy Solution for Quantification of Debilitating Fluoride Ions in Drinking Water
Priya Yadav; Harshita Laddha; Madhu Agarwal; Ragini Gupta
Journal of Chemical Education, v99 n7 p2677-2683 2022
A smartphone-based digital imaging method has been successfully introduced in an undergraduate laboratory class to quantify fluoride ions in water. Students first synthesized the chemosensor (E)-2-(1-(6-nitro-2-oxo-2H-chromen-3-yl)ethylidene)-N-phenylhydrazine-1-carbothioamide (CT) via an eco-friendly and green microwave-assisted protocol and characterized the product using FTIR spectroscopy, HRMS, and NMR spectroscopy. Students are advised to quantify the colorimetric response of a chemosensor toward fluoride ion by a UV-vis spectrophotometer and smartphone with the preinstalled Color Picker Android application to read the output RGB values, simultaneously. The agreement of results from the developed smartphone-based colorimetry protocol with the conventional UV--vis method validated the feasibility of the smartphone as a new analytical tool for versatile, cheap, and prompt analysis of fluoride ions in real samples. Overall, the experiment develops a multidimensional understanding of green chemistry principles and atom economy as well as characterization techniques, data collection, calibration plots, Job's plot, and interpretation of results.
Descriptors: Handheld Devices, Telecommunications, Educational Technology, College Science, Undergraduate Students, Science Laboratories, Spectroscopy, Scientific Concepts, Computer Oriented Programs, Science Experiments, Chemistry, Hands on Science
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