| Authors | محمد مظلوم اردکانی,فریبا صباقیان,علیرضا خوشرو,حسین نعیمی |
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| Journal | CHINESE J CATAL |
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| Page number | 565 |
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| Volume number | 35 |
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| IF | 1.964 |
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| Paper Type | Full Paper |
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| Published At | 2014-04-11 |
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| Journal Grade | Scientific - research |
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| Journal Type | Electronic |
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| Journal Country | Iran, Islamic Republic Of |
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| Journal Index | ISI ,SCOPUS |
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Abstract
A carbon paste electrode modified with 2-((7-(2,5-dihydrobenzylideneamino)heptylimino)methyl) benzene-1,4-diol (DHB) and carbon nanotubes were used to simultaneously determine the concentrations of isoproterenol (IP), uric acid (UA), and folic acid (FA) in solution. First, cyclic voltammetry was used to investigate the redox properties of the modified electrode at various scan rates. Next, the mediated oxidation of IP at the modified electrode is described. At the optimum pH of 7.0, the oxidation of IP occurs at a potential about 90 mV less than that of an unmodified carbon paste electrode. Based on the results of differential pulse voltammetry (DPV), the oxidation of IP showed a dynamic range between 10 and 6000 μmol/L, and a detection limit of 1.24 µmol/L. Finally, DPV was used to simultaneously determine the concentrations of IP, UA, and FA in solution at the modified electrode.
