摘要
本文通过自组装的方法制备了3-氨基-5-巯基-1,2,4-三唑(TA)修饰金电极。X射线光电子能谱表明,3-氨基-5-巯基-1,2,4-三唑是通过形成S-Au键而组装到Au电极表面。研究了去甲肾上腺素在该自组装膜电极上的电化学行为。实验结果表明:在PH4.5的0.1mol/L BR缓冲溶液中,膜电极对去甲肾上腺素的电化学氧化具有明显的催化作用,其氧化峰电流与去甲肾上腺素的浓度在2.0×10^-6~1.9×10^-4mol/L范围内呈良好线性关系。方法检出限为4.0×10^-7mol/L。
3-Amino-5-mercapto-1,2,4-triazole modified gold electrode was fabricated and used to study the electrochemical behavior of norepinephrine in 0.1 moL/L BR buffer. The results showed that the TA as a promoter acceleratesd the oxidation of norepinephrine.The anodic peak current was linear with the concentration of norepinephrine in the range of 2.0×10^-6-1.9×10^-4mol/ L,and the detection limit was 4.0×10^-7 mol/ L.
出处
《分析科学学报》
CAS
CSCD
2006年第4期425-427,共3页
Journal of Analytical Science
基金
湖北省自然科学基金(No.2002AB047)
湖北省教育厅基金(No.2002A00018)