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Determination of Ascorbic Acid in the Presence of Uric Acid and Folic Acid by a Nanostructured Electrochemical Sensor Based on a TiO2 Nanoparticle Carbon Paste Electrode.
- Source :
-
Analytical Letters . Nov2010, Vol. 43 Issue 16, p2618-2630. 13p. - Publication Year :
- 2010
-
Abstract
- A carbon paste electrode (CPE), modified with novel hydroquinone/TiO2 nanoparticles, was designed and used for simultaneous determination of ascorbic acid (AA), uric acid (UA) and folic acid (FA). The magnitude of the peak current for modified TiO2-nanoparticle CPE (MTNCPE) increased sharply in the presence of ascorbic acid and was proportional to its concentration. A dynamic range of 1.0-1400.0 μM, with the detection limit of 6.4 × 10-7 M for AA, was obtained using the DPV technique (pH = 7.0). The prepared electrode was successfully applied for the determination of AA, UA, and FA in real samples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00032719
- Volume :
- 43
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Analytical Letters
- Publication Type :
- Academic Journal
- Accession number :
- 55568509
- Full Text :
- https://doi.org/10.1080/00032711003726928