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ERIC Number: EJ1090616
Record Type: Journal
Publication Date: 2016-Feb
Pages: 4
Abstractor: As Provided
ISSN: ISSN-0021-9584
Quantifying Gold Nanoparticle Concentration in a Dietary Supplement Using Smartphone Colorimetry and Google Applications
Campos, Antonio R.; Knutson, Cassandra M.; Knutson, Theodore R.; Mozzetti, Abbie R.; Haynes, Christy L.; Penn, R. Lee
Journal of Chemical Education, v93 n2 p318-321 Feb 2016
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.
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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Secondary Education; High Schools; Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: National Science Foundation (NSF)
Authoring Institution: N/A
Identifiers - Location: Minnesota
Grant or Contract Numbers: NSF0957696; DMR0819885; DMR1263062