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- Title
Development of a voltammetric procedure for assay of thebaine at a multi-walled carbon nanotubes electrode: quantification and electrochemical studies.
- Authors
Rezaei, Behzad; Damiri, S.
- Abstract
The study of electrochemical behavior and determination of thebaine (THEB), an opiate alkaloid, is described on a multi-walled carbon nanotube (MWCNT) modified glassy carbon electrode by adsorptive stripping voltammetry and electrochemical impedance spectroscopy. The results indicated that MWCNT electrodes remarkably enhance electrocatalytic activity toward the oxidation of THEB in a wide pH range of 2.0–10.0, and it shows two irreversible and diffusion-controlled anodic peaks. Then, a sensitive, simple, and time-saving cyclic voltammetric procedure was developed for the analysis of THEB in human urine samples. Under optimized conditions, the oxidation peak has two linear dynamic ranges of 1.0–80.0 and 100.0–600.0 μM, with detection limit of 0.23 μM and a precision of <4% (relative standard deviation for eight analysis).
- Subjects
VOLTAMMETRY; CARBON nanotubes; ELECTROCHEMISTRY; IMPEDANCE spectroscopy; HYDROGEN-ion concentration; ELECTRODES
- Publication
Journal of Solid State Electrochemistry, 2010, Vol 14, Issue 6, p1079
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-009-0921-3