Caffeine Sensitive Electrode and Its Analytical Applications
In this research, for the first time, a caffeine potentiometric membrane sensor based on 4-tert-butyl-2,6-diphenyl-2H-thiopyran (BDT) is presented. The sensor exhibited a near-Nernstian response over a concentration range of 3.0 × 10−7 mol L−1−1.0 × 10−2 mol L−1, with a detection limit of 2.0 × 10−7 mol L−1. The best performance was achieved with a membrane composition, consisting of 32% PVC, 56% ortho-nitrophenyloctyl ether (o-NPOE), 4% BDT and 8% oleic acid (OA). The sensor was successfully applied to determine caffeine in coffee, tea, pharmaceutical dosage forms and human urine samples. The developed sensor did not display statistically significant differences with the standard procedures.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2009-02-01
More about this publication?
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites