Authors: McCusker, Rachel R.¹; Goldberger, Bruce A.²; Cone, Edward J.³

Source: Journal of Analytical Toxicology, Volume 30, Number 2, March 2006 , pp. 112-114(3)

Publisher: Preston Publications

Abstract:

The caffeine content of 10 energy drinks, 19 carbonated sodas, and 7 other beverages was determined. In addition, the variability of the caffeine content of Coca-Cola^® fountain soda was evaluated. Caffeine was isolated from the samples by liquid–liquid extraction and analyzed by gas chromatography with nitrogen-phosphorus detection. The caffeine concentration of the caffeinated energy drinks ranged from none detected to 141.1 mg/serving. The caffeine content of the carbonated sodas ranged from none detected to 48.2 mg/serving, and the content of the other beverages ranged from < 2.7 to 105.7 mg/serving. The intra-assay mean, standard deviation, and % coefficient of variation for the Coca-Cola fountain samples were 44.5, 2.95, and 6.64 mg/serving, respectively.

Document Type: Research article

Affiliations: 1: Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, P.O. Box 100275, Gainesville, Florida 32610-0275 2: Department of Pathology, Immunology, Laboratory Medicine, and Department of Psychiatry, University of Florida College of Medicine, P.O. Box 100275, Gainesville, Florida 32610-0275 3: ConeChem Research, LLC, 441 Fairtree Drive, Severna Park, Maryland 21146

Publication date: 2006-03-01

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• The Journal of Analytical Toxicology (JAT), established in 1977 and published 9 times a year, is the international source covering a broad range of clinical, forensic, and industrial laboratory topics regarding the isolation, identification, and quantitation of potentially toxic substances.

  With an emphasis on practical application, JAT articles provide improved and novel techniques for use in clinical, forensic, workplace, sports testing (doping), and other toxicology laboratories. Articles describe newly developed methods in immunoassay testing, gas chromatography, liquid chromatography, mass spectrometry, atomic absorption spectrometry, solid and liquid phase extraction techniques, and other analytical approaches. Worldwide readership includes toxicologists, pathologists, chemists, clinicians, researchers, and educators working in medical examiner and law enforcement laboratories, hospitals, university and independent analytical laboratories, as well as the drug manufacturing industry.

  Each year in October, we publish a special issue from the Society of Forensic Toxicologists.

  JAT, as determined by ISI Citation Index, is one of the two most referenced international journals in forensic science.

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