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Kinetic determination of caffeine in drug formulations
Joint Authors
Abd al-Nabi, Abd Allah M.
Sultan, Salah M.
Source
The Arabian Journal for Science and Engineering
Issue
Vol. 17, Issue 2A (30 Apr. 1992), pp.173-179, 7 p.
Publisher
King Fahd University of Petroleum and Minerals
Publication Date
1992-04-30
Country of Publication
Saudi Arabia
No. of Pages
7
Main Subjects
Abstract EN
Two simple and accurate kinetic methods, the fixed time and the fixed concentration methods, for the determination of caffeine were described.
The two methods involve the use of 3.20xl0"3M cerium(iv) solution and 8.0x10" M sulfuric acid.
Reaction rates were followed at 405 nm; absorbance measurements for the fixed time method were taken at 350 s; and the following calibration equation was used for calculating unknown concentrations of caffeine.
A = 2.31 -3.55 xlO"3C For the fixed concentration method, time was measured at a fixed absorbance of 1.70 and the following calibration equation was used: \jt = -1.25 x 10"3 + 2.48 x 10”5 C The two methods were applied to the determination of caffeine in proprietary drugs, interferences were studied, and a statistical comparison with the results obtained by the official BP method was made.
American Psychological Association (APA)
Sultan, Salah M.& Abd al-Nabi, Abd Allah M.. 1992. Kinetic determination of caffeine in drug formulations. The Arabian Journal for Science and Engineering،Vol. 17, no. 2A, pp.173-179.
https://search.emarefa.net/detail/BIM-395076
Modern Language Association (MLA)
Sultan, Salah M.& Abd al-Nabi, Abd Allah M.. Kinetic determination of caffeine in drug formulations. The Arabian Journal for Science and Engineering Vol. 17, no. 2A (Apr. 1992), pp.173-179.
https://search.emarefa.net/detail/BIM-395076
American Medical Association (AMA)
Sultan, Salah M.& Abd al-Nabi, Abd Allah M.. Kinetic determination of caffeine in drug formulations. The Arabian Journal for Science and Engineering. 1992. Vol. 17, no. 2A, pp.173-179.
https://search.emarefa.net/detail/BIM-395076
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 178-179
Record ID
BIM-395076