Preparation and characterization of 3-[(1H-1,2,4-triazole-3-ylimino)methyl]naphtalene-2-ol film at the platinum surface for selective voltammetric determination of dopamine in the presence of uric acid and ascorbic acid |
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| Authors: | Feyza Tatli Demet Uzun Tuğba Tabanlıgil Calam Ayla Balaban Gündüzalp Erdoğan Hasdemir |
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| Affiliation: | 1. Chemistry Teacher Education, Marmara University, İstanbul, Turkey;2. Faculty of Science, Department of Chemistry, Gazi University, Ankara, Turkey;3. Technical Sciences Vocational High School, Gazi University, Ankara, Turkey |
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| Abstract: | A [(1H-1,2,4-triazole-3-ylimino)methyl]naphthalene-2-ol (TMN-2-ol) film modified platinum (Pt) electrode has been fabricated by the electrochemical oxidation in acetonitrile solution. The modified surface was characterized by electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). The prepared Pt electrode can be used as a functional interface to sensitive and selective determination of dopamine (DA) in the presence of uric acid (UA) and ascorbic acid (AA) by square wave voltammetry (SWV) method. The limit of detection (LOD) and limit of quantification (LOQ) of DA were 9.25 × 10−8 and 2.78 × 10−7 M, respectively. Linear range of DA was found to be between 3.95 × 10−7 and 4.19 × 10−6 M. |
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| Keywords: | characterization coating determination dopamine surface modification |
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