• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electroanalysis >Electrochemical detection of 2-naphthol at a glassy carbon electrode modified with Tosflex film
【24h】

Electrochemical detection of 2-naphthol at a glassy carbon electrode modified with Tosflex film

机译：Tosflex膜修饰的玻碳电极上2-萘酚的电化学检测

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

In this study, a Tosflex (a perfluoro-anion-exchange membrane) modified glassy carbon electrode has been used to detect 2-naphthalenol (2-naphthol) in aqueous solutions in order to demonstrate the electroanalytical application of Tosflex. 2-naphthol polymerizes upon electrochemical oxidation at a glassy carbon electrode; however, the current related to this oxidation is too small for analytical purpose at low concentration level. A Tosflex polymer modified glassy carbon electrode (TFGCE) was found of having capability to improve the detection limit because 2-naphthol molecules deprotonated in basic solutions to form 2-naphtholate anions that were accumulated to TFGCE by the anion-exchange characteristic of Tosflex. The accumulated 2-naphtholate anions were determined with the following differential pulse voltammetry. With 3 minutes accumulation at +0.05 V, the dependence of oxidation current versus concentration was linear from 8 x 10(-7) M to 1 X 10(-5) M. with a regression coefficient of 0.999 and a detection limit of 2 x 10(-7) M. Unlike many other anion-exchange polymer modified electrodes, the TFGCE is stable at highly basic condition.
机译：在这项研究中，Tosflex（全氟阴离子交换膜）修饰的玻璃碳电极已用于检测水溶液中的2-萘酚（2-萘酚），以证明Tosflex的电分析应用。 2-萘酚在玻璃碳电极上经电化学氧化聚合。然而，与该氧化有关的电流对于低浓度水平的分析目的而言太小。发现Tosflex聚合物修饰的玻碳电极（TFGCE）具有提高检测限的能力，因为2-萘酚分子在碱性溶液中发生了质子化反应，形成了2-萘甲酸根阴离子，并通过Tosflex的阴离子交换特性积累到TFGCE上。用下面的差分脉冲伏安法测定积累的2-萘甲酸根阴离子。在+0.05 V电压下累积3分钟，氧化电流与浓度的关系从8 x 10（-7）M到1 X 10（-5）M是线性的，回归系数为0.999，检测极限为2 x 10（-7）M。与许多其他阴离子交换聚合物改性电极不同，TFGCE在高碱性条件下稳定。

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