An electrochemical sensor based on carbon nanotubes and a new Schiff base for selective determination of dopamine in the presence of uric acid, folic acid, and acetaminophen |
| |
Authors: | Mohammad Mazloum-Ardakani Abolfazl Naser-Sadrabadi Mohammad Ali Sheikh-Mohseni Ali Benvidi Hossein Naeimi Azam Karshenas |
| |
Institution: | 1. Department of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, Iran 2. Faculty of Education Center of Miandoab, Urmia University, Urmia, Iran 3. Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317, Iran
|
| |
Abstract: | In this paper, the electrochemical properties of a carbon paste electrode modified by a synthesized Schiff base, 2,2′-1,4-phenylenediyl-bis(nitrilomethyl-idene)]-bis(4-hydroxyphenol), and carbon nanotubes were studied by cyclic voltammetry. The modified electrode was used as an electrochemical sensor for catalytic oxidation of dopamine (DA). Differential pulse voltammetry (DPV) of DA by this electrochemical sensor exhibited two linear dynamic ranges with a detection limit (3σ) of 0.42 μM. Also, the selectivity of the prepared electrochemical sensor was checked for determination of DA in the presence of uric acid (UA), folic acid (FA), and acetaminophen (AC). The DPV results indicate that the proposed sensor can be used for simultaneous determination of DA, UA, and FA and also simultaneous determination of DA and AC. Finally, the proposed electrochemical sensor was used for determinations of these substances in real sample. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|