Coulometric determination of purine alkaloid series with electrogenerated chlorine

Authors
Chernysheva, NN Abdullin, IF Budnikov, GK
Citation
Nn. Chernysheva et al., Coulometric determination of purine alkaloid series with electrogenerated chlorine, J ANALYT CH, 56(7), 2001, pp. 663-665
Citations number
7
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF ANALYTICAL CHEMISTRY
ISSN journal
10619348 → ACNP
Volume
56
Issue
7
Year of publication
2001
Pages
663 - 665
Database
ISI
SICI code
1061-9348(200107)56:7<663:CDOPAS>2.0.ZU;2-D
Abstract
In acid solution, caffeine, theobromine, and theophylline are rapidly and q uantitatively oxidized with electrogenerated chlorine in a stoichiometric r atio of 2: 5 to give alloxan and urea. Procedures for the coulometric deter mination of microgram amounts of caffeine, theophylline, and theobromine in model solutions, caffeine in tea and coffee samples, and caffeine and theo phylline in some pharmaceutical preparations were developed.