Quantifying Gold Nanoparticle Concentration in a Dietary Supplement Using Smartphone Colorimetry and Google Applications

Antonio R. Campos, Cassandra M. Knutson, Theodore R. Knutson, Abbie R. Mozzetti, Christy L. Haynes, R. Lee Penn

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)318-321
Number of pages4
JournalJournal of Chemical Education
Volume93
Issue number2
DOIs
StatePublished - Feb 9 2016

Keywords

  • Analytical Chemistry
  • First-Year Undergraduate/General
  • Hands-On Learning/Manipulatives
  • High School/Introductory Chemistry
  • Internet/Web-Based Learning
  • Laboratory Instruction
  • Nanotechnology
  • Physical Chemistry
  • UV-Vis Spectroscopy

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