• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Dopamine Determination with a Biosensor Based on Catalase and Modified Carbon Paste Electrode with Zinc Oxide Nanoparticles
【24h】

Dopamine Determination with a Biosensor Based on Catalase and Modified Carbon Paste Electrode with Zinc Oxide Nanoparticles

机译：基于过氧化氢酶和氧化锌纳米粒子修饰的碳糊电极的生物传感器测定多巴胺

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

摘要

Determination level of dopamine (DA) is very important in medicine and disease diagnostic. Inpresented research, a biosensor designed based on catalase (CAT) and modified carbon paste electrode(CPE) with zinc oxide (ZnO) nanoparticles for Determination level of dopamine by electrochemicalmethods. Synthesized ZnO nanoparticles were studied by X-ray diffraction (XRD), UV-visiblespectrophotometer and atomic force microscopy (AFM). Electrochemical studies were done withcyclic voltammetry (CV) and constant potential amperometry (CPA) experiments. A pair of well- o defined redox peaks was observed at the CAT / ZnO Nps/ CPE with The formal potential (E ) equal to+ (92.5 1) mV. Zinc oxide nanoparticles could play a key role in creates the CAT CV response andfacile electron transfer between CAT and CPE. The CAT / ZnO Nps/ CPE showed a good sensitivestate towards oxidation of DA. The designed biosensor showed a good stability and retains its 91%activity after 21 days.
机译：多巴胺（DA）的测定水平在医学和疾病诊断中非常重要。本文介绍了一种基于过氧化氢酶（CAT）和修饰的碳糊电极（CPE）和氧化锌（ZnO）纳米粒子设计的生物传感器，用于通过电化学方法测定多巴胺的水平。通过X射线衍射（XRD），紫外可见分光光度计和原子力显微镜（AFM）研究了合成的ZnO纳米粒子。用循环伏安法（CV）和恒电位安培法（CPA）实验进行了电化学研究。在CAT / ZnO Nps / CPE上观察到一对定义良好的氧化还原峰，其形式电位（E）等于+（92.5 1）mV。氧化锌纳米粒子可能在创建CAT CV响应以及CAT和CPE之间的便捷电子转移方面起关键作用。 CAT / ZnO Nps / CPE对DA的氧化表现出良好的敏感状态。设计的生物传感器显示出良好的稳定性，并在21天后保留其91％的活性。

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