Voltammetric determination of isoproterenol using a 5-amino-2',4'-dimethoxybiphenyl-2-ol m

• 作 者: Hadi Beitollahi Hoj atollah Khabazzadeh Hassan Karimi-Maleh Ali Akbari
• 机 构: Environment Department,Research Institute of Environmental Sciences,International Center for Science
• 出 处: Chinese Chemical Letters
• 发表日期: 2012年06期
• 关键词: paste nanotube nanotubes voltammetry currents linearly determining anodic urine

A new electrochemical sensor for determination of isoproterenol(IP) is described.The sensor is based on carbon paste electrode (CPE) modified with 5-amino-2’,4’-dimethoxybiphenyl-2-ol(5ADMB) and takes the advantages of carbon nanotubes(CNTs). Under the optimum pH of 7.0,the oxidation of IP occurs at a potential about 210 mV less positive than that of the unmodified CPE. The oxidation currents increased linearly with two concentration intervals of IP,one is 0.09 to 20.0 |xmol/L and,the other is 20.0 to 400.0μmol/L.The detection limit(3σ) obtained by square wave voltammetry(SWV) was 39.0 nmol/L.The practical application of the modified electrode was demonstrated by determining IP in IP ampoule,urine and human blood serum samples.

A new electrochemical sensor for determination of isoproterenol (IP) is described. The sensor is based on carbon paste electrode (CPE) modified with 5-amino-2 ’, 4’-dimethoxybiphenyl-2-ol Under the optimum pH of 7.0, the oxidation of IP occurs at a potential of 210 mV less positive than that of the unmodified CPE. The oxidation currents increase linearly with two concentration intervals of IP, one is 0.09 to 20.0 | xmol / L and the other is 20.0 to 400.0 μmol / L. The detection limit (3σ) obtained by square wave voltammetry (SWV) was 39.0 nmol / L. The practical application of the modified electrode was demonstrated by determining IP in IP ampoule, urine and human blood serum samples.