Electrocatalytic and Simultaneous Determination of Ascorbic Acid,Nicotinamide Adenine Dinucleotide and Folic Acid at Ruthenium(II) Complex‐ZnO/CNTs Nanocomposite Modified Carbon Paste Electrode |
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| Authors: | Hassan Karimi‐Maleh Fahimeh Tahernejad‐Javazmi Marzieh Daryanavard Hassan Hadadzadeh Ali A Ensafi Maryam Abbasghorbani |
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| Institution: | 1. Department of Chemistry, Graduate University of Advanced Technology, Kerman, Iran tel: +98?911?2540112 (mobile);2. fax: +98?341?2121018;3. Department of Chemistry, Isfahan University of Technology, Isfahan 84156‐83111, Iran;4. Gas Division, Research Institute of Petroleum Industry, P.O. Box 14665‐137, Tehran, Iran |
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| Abstract: | This paper describes the development a novel ruthenium(II) complex‐ZnO/CNTs modified carbon paste electrode (Ru(II)/ZnO/CNTs/CPE) for the electrocatalytic determination of ascorbic acid (AA). The objective of this novel electrode modification was to seek new electrochemical performances for the detection of AA, nicotinamide adenine dinucleotide (NADH) and folic acid (FA). The peak potentials recorded were 170, 500 and 830 mV vs. Ag/AgCl/KClsat for AA, NADH and FA, respectively. The peak currents were linearly dependent on AA, NADH and FA concentrations using square wave voltammetry (SWV) method at the ranges of 0.008–251, 1.0–650, and 3.0–700 µmol L?1, with detection limits of 0.005, 0.5, and 1.0 µmol L?1, respectively. |
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| Keywords: | Ascorbic acid NADH Folic acid ZnO/CNTs nanocomposite Modified electrode |
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