Spectrophotometry and colorimetry experiments are common in high school and college chemistry courses, and nanotechnology is increasingly common in every day products and new devices. Previous work has demonstrated that handheld camera devices can be used to quantify the concentration of a colored analyte in solution in place of traditional spectrophotometric or colorimetric equipment. This paper extends this approach to quantifying the concentration of gold nanoparticles in a colloidal gold "dietary supplement". With the addition of free Google applications, the investigation provides a feasible, sophisticated lab experience and introduction to nanotechnology.
Bibliographical noteFunding Information:
This work was supported by White Bear Lake High School, National Science Foundation (No. NSF-0957696), and MRSEC (No. DMR-0819885) and Research Experiences for Undergraduates (REU) (No. DMR-1263062) Programs of the National Science Foundation. The authors would like to thank 2013-14 White Bear Lake AP Chemistry students for their participation in trial experiments.
© 2015 The American Chemical Society and Division of Chemical Education, Inc.
Copyright 2016 Elsevier B.V., All rights reserved.
- Analytical Chemistry
- First-Year Undergraduate/General
- Hands-On Learning/Manipulatives
- High School/Introductory Chemistry
- Internet/Web-Based Learning
- Laboratory Instruction
- Physical Chemistry
- UV-Vis Spectroscopy