Determination of Caffeine in Beverages by Capillary Zone Electrophoresis: An Experiment for the Undergraduate Analytical Laboratory

Certain individuals may be sensitive to specific compounds in comsumer products. It is important to quantify these analytes in food products in order to monitor their intake. Caffeine is one such compound. Determination of caffeine in beverages by spectrophotometric procedures requires an extraction...

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Veröffentlicht in:Journal of chemical education 1996-12, Vol.73 (12), p.1169
Hauptverfasser: Conte, Eric D, Barry, Eugene F, Rubinstein, Harry
Format: Artikel
Sprache:eng
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Zusammenfassung:Certain individuals may be sensitive to specific compounds in comsumer products. It is important to quantify these analytes in food products in order to monitor their intake. Caffeine is one such compound. Determination of caffeine in beverages by spectrophotometric procedures requires an extraction procedure, which can prove time-consuming. Although the corresponding determination by HPLC allows for a direct injection, capillary zone electrophoresis provides several advantages such as extremely low solvent consumption, smaller sample volume requirements, and improved sensitivity.
ISSN:0021-9584
1938-1328
DOI:10.1021/ed073p1169