...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electroanalysis >Study on the electrochemical behavior of dopamine and uric acid at a 2-amino-5-mercapto-[1,3,4] triazole self-assembled monolayers electrode
【24h】

Study on the electrochemical behavior of dopamine and uric acid at a 2-amino-5-mercapto-[1,3,4] triazole self-assembled monolayers electrode

机译：多巴胺和尿酸在2-氨基-5-巯基-[1,3,4]三唑自组装单层电极上的电化学行为研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Selected from a series of structurally related heteroaromatic thiols, a newly synthesized reagent 2-amino-5-mercapto[1,3,4] triazole (MATZ) was used to fabricate self-assembled monolayers (SAMs) on gold electrode for the first time. ne MATZ/Au SAMs was characterized by electrochemical methods and scanning electronic microscopy (SEM). In 0.04 mol/L Britton - Robinson buffer solution (pH5), the electrochemical behavior of dopamine showed a quasireversible process at the MATZ/Au SAMs with an electrode kinetic constant 0.1049 cm/s. However, the electrochemical reaction of uric acid at the SAMs electrode showed an irreversible oxidation process, the charge-transfer kinetics of uric acid was promoted by the SAMs. By Osteryoung square-wave voltammetry (OSWV), the simultaneous determination of dopamine and uric acid can be accomplished with an oxidation peak separation of 0.24 V, the peak current of dopamine and uric acid were linearly to its concentration in the range of 2.5 X 10(-6)-5.0 x 10(-4) mol/L for dopamine and 1 x 10(-6)-1 x 10(-4) mol/L for uric acid with a detection limit of 8.0 x 10(-7) mol/L for dopamine and 7.0 x 10(-7) mol/L for uric acid. The MATZ/Au SAMs electrode was used to detect the content of uric acid in real urine and serum sample with satisfactory results.
机译：从一系列结构相关的杂芳族硫醇中选择一种新合成的试剂2-氨基-5-巯基[1,3,4]三唑（MATZ）首次在金电极上制备自组装单分子膜（SAMs）。 。 MATZ / Au SAM的特征在于电化学方法和扫描电子显微镜（SEM）。在0.04 mol / L的Britton-Robinson缓冲溶液（pH5）中，多巴胺的电化学行为在MATZ / Au SAMs上表现出拟逆过程，电极动力学常数为0.1049 cm / s。然而，尿酸在SAMs电极上的电化学反应显示出不可逆的氧化过程，SAMs促进了尿酸的电荷转移动力学。通过Osteryoung方波伏安法（OSWV），可以同时测定多巴胺和尿酸的氧化峰分离度为0.24 V，多巴胺和尿酸的峰值电流在2.5 X 10范围内呈线性变化多巴胺为（-6）-5.0 x 10（-4）mol / L，尿酸为1 x 10（-6）-1 x 10（-4）mol / L，检出限为8.0 x 10（-7）多巴胺为mol / L，尿酸为7.0 x 10（-7）mol / L。 MATZ / Au SAMs电极用于检测真实尿液和血清样品中的尿酸含量，结果令人满意。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号