基于纳米结构的电化学传感器同时测定溶液中异丙肾上腺素、尿酸和叶酸的浓度(英文)  

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

作　　者：Mohammad Mazloum-Ardakani Fariba Sabaghian Alireza Khoshroo Hossein Naeimi 

机构地区：[1]Department of Chemistry,Faculty of Science,Yazd University [2]Department of Organic Chemistry,Faculty of Chemistry,University of Kashan

出　　处：《催化学报》2014年第4期565-572,共8页

基　　金：supported by Yazd University Research Council, IUT Research Council and Excellence in Sensors

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 concen-trations 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 elec-trode. 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.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 concen-trations 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 elec-trode. 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：异丙肾上腺素 同时测定 电化学传感器 酸溶液 浓度 尿酸 碳糊修饰电极 氧化还原性质 

分 类 号：O657.1[理学—分析化学] TP212.2[理学—化学]