催化学报 ›› 2014, Vol. 35 ›› Issue (4): 565-572.DOI: 10.1016/S1872-2067(14)60027-9

• 研究论文 • 上一篇    下一篇

Simultaneous determination of the concentrations of isoproterenol, uric acid, and folic acid in solution using a novel nanostructure-based electrochemical sensor

Mohammad Mazloum-Ardakania, Fariba Sabaghiana, Alireza Khoshrooa, Hossein Naeimib   

  1. a Department of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, Iran;
    b Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317, Iran
  • 收稿日期:2013-10-18 修回日期:2014-01-07 出版日期:2014-03-20 发布日期:2014-03-21
  • 通讯作者: Mohammad Mazloum-Ardakani

Simultaneous determination of the concentrations of isoproterenol, uric acid, and folic acid in solution using a novel nanostructure-based electrochemical sensor

Mohammad Mazloum-Ardakania, Fariba Sabaghiana, Alireza Khoshrooa, Hossein Naeimib   

  1. a Department of Chemistry, Faculty of Science, Yazd University, Yazd, 89195-741, Iran;
    b Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317, Iran
  • Received:2013-10-18 Revised:2014-01-07 Online:2014-03-20 Published:2014-03-21
  • Contact: Mohammad Mazloum-Ardakani

摘要:

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.

关键词: Isoproterenol, Uric acid, Folic acid, Carbon nanotube, Modified electrode, Electrocatalysis

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.

Key words: Isoproterenol, Uric acid, Folic acid, Carbon nanotube, Modified electrode, Electrocatalysis