Demonstrating principles of spectrophotometry by constructing a simple, low-cost, functional spectrophotometer utilizing the light sensor on a smartphone

Hosker, B.S (2018) 'Demonstrating principles of spectrophotometry by constructing a simple, low-cost, functional spectrophotometer utilizing the light sensor on a smartphone.' Journal of Chemical Education, 95 (1). pp. 178-181. ISSN 0021-9584

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Official URL: http://doi.org/10.1021/acs.jchemed.7b00548

Abstract

A highly simplified variation on the DIY spectrophotometer using a smartphone’s light sensor as a detector and an app to calculate and display absorbance values was constructed and tested. This simple version requires no need for electronic components or post-measurement spectral analysis. Calibration graphs constructed from two molecules that absorb light maximally at different wavelengths (430nm and 630nm) demonstrate linearity with R2 values of 0.9975 and 0.9848 respectively.

Item Type: Article
Note:

First published on 30 November 2017 ahead of its inclusion in an issue.

Keywords: high school/introductory chemistry, first-year undergraduate, biochemistry, analytical chemistry, laboratory instruction, hands-on learning/manipulatives, collaborative/cooperative learning, inquiry-based/discovery learning, laboratory equipment/apparatus, spectroscopy
Divisions: College of Liberal Arts
Date Deposited: 13 Nov 2017 15:42
Last Modified: 09 Aug 2018 11:22
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