ERIC Number: EJ1062368
Record Type: Journal
Publication Date: 2015-May
Pages: 4
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Determination of Niacinamide in Lotions and Creams Using Liquid-Liquid Extraction and High-Performance Liquid Chromatography
Usher, Karyn M.; Simmons, Carolyn R.; Keating, Daniel W.; Rossi, Henry F., III
Journal of Chemical Education, v92 n5 p907-910 May 2015
Chemical separations are an important part of an undergraduate chemistry curriculum. Sophomore students often get experience with liquid-liquid extraction in organic chemistry classes, but liquid-liquid extraction is not as often introduced as a quantitative sample preparation method in honors general chemistry or quantitative analysis classes. This experiment offers a relevant, interesting way to use liquid-liquid extraction and high-performance liquid chromatography (HPLC) to analyze popular lotions and creams for niacinamide content. After completing the experiment, students will have a better understanding of the extraction technique, Beer-Lambert law, and HPLC. The percent recovery from a spiked sample of Olay Original Active Hydrating Beauty Fluid was found to be 99.22% with a standard deviation of 0.01%.
Descriptors: Science Instruction, College Science, Undergraduate Study, Chemistry, Scientific Concepts, Science Experiments, Science Laboratories, Laboratory Experiments, Teaching Methods
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: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A