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

• Antonio R. Campos ^[1] ; Cassandra M. Knutson ^[2] ; Theodore R. Knutson ^[1] ; Abbie R. Mozzetti ^[1] ; Christy L. Haynes ^[1] ; R. Lee Penn ^[1]
  1. [1] University of Minnesota

     University of Minnesota

     City of Minneapolis, Estados Unidos

     
  2. [2] White Bear Lake High School, United States
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 93, Nº 2, 2016, págs. 318-321
• Idioma: inglés
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• Resumen

  • 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.