...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry >Selective detection by depleting interferent in diffusion layer based on a combination of pre-depletion pulse and differential pulse voltammetry
【24h】

Selective detection by depleting interferent in diffusion layer based on a combination of pre-depletion pulse and differential pulse voltammetry

机译：基于耗尽前脉冲和差分脉冲伏安法的组合，通过消除扩散层中的干扰物来进行选择性检测

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A method for selective detection based on the concept of electrochemical depletion of interfering species in diffusion layer is proposed. By applying an appropriate pre-depletion pulse (PDP) to the working electrode, interfering species is oxidized and thus an interferent-depleted micro-environment is created in diffusion layer. Then a follow-up differential pulse voltammetry (DPV) is utilized for detecting target analyte. The feasibility of the method is verified by detecting dopamine in the presence of ascorbic acid. The results demonstrate that the detection limit is improved by more than an order of magnitude compared with that of the method of combining potential step with linear sweep voltammetry, owing to the ability of differential pulse voltammetry to eliminate background current. Experimental parameters affecting the dopamine detection are investigated systematically. Because only easily achievable potential control and commonly used electrode without modification are required, the proposed method is facile and thus high reproducibility is expected.
机译：提出了一种基于电化学耗尽扩散层中干扰物质的概念的选择性检测方法。通过向工作电极施加适当的预耗尽脉冲（PDP），干扰物质被氧化，因此在扩散层中产生了干扰物耗尽的微环境。然后使用后续的差分脉冲伏安法（DPV）检测目标分析物。通过在抗坏血酸存在下检测多巴胺来验证该方法的可行性。结果表明，由于差分脉冲伏安法具有消除背景电流的能力，与将电位阶跃与线性扫描伏安法相结合的方法相比，检测限提高了一个数量级以上。系统地研究了影响多巴胺检测的实验参数。因为仅需要容易实现的电势控制和不需要修改的通常使用的电极，所以所提出的方法是容易的，因此期望高再现性。

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