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Full Paper
Voltammetric Determination of Xanthine with a Single-Walled Carbon Nanotube-Ionic Liquid Paste Modified Glassy Carbon Electrode
Article first published online: 23 OCT 2007
DOI: 10.1002/elan.200704042
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
1521-4109/asset/cover.gif?v=1&s=209b447dcf920ba3fb44f2b08a87a6b586320422 "Electroanalysis")
Additional Information
How to Cite
Xiao, F., Ruan, C., Li, J., Liu, L., Zhao, F. and Zeng, B. (2008), Voltammetric Determination of Xanthine with a Single-Walled Carbon Nanotube-Ionic Liquid Paste Modified Glassy Carbon Electrode. Electroanalysis, 20: 361–366. doi: 10.1002/elan.200704042
Publication History
- Issue published online: 14 FEB 2008
- Article first published online: 23 OCT 2007
- Manuscript Accepted: 24 SEP 2007
- Manuscript Received: 9 AUG 2007
- Abstract
- References
- Cited By
Keywords:
- Xanthine;
- Ionic liquid;
- Single-walled carbon nanotubes;
- Voltammetry
Abstract
Single-walled carbon nanotube (SWNT) and room temperature ionic liquid (i.e., 1-butyl-3-methylimidazolium hexaflourophosphate, BMIMPF6) were used to fabricate paste modified glassy electrode (GCE). It was found that the electrode showed sensitive voltammetric response to xanthine (Xt). The detection limit was 2.0×10−9 M and the linear range was 5.0×10−9 to 5.0×10−6 M. The electrode also displayed good selectivity and repeatability. In the presence of uric acid (UA) and hypoxanthine (Hx) the response of Xt kept almost unchanged. Thus this electrode could find application in the determination of Xt in some real samples. The analytical performance of the BMIMPF6-SWNT/GCE was demonstrated for the determination of Xt in human serum and urine samples.