•  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
期刊检索


检索
检索项:
检索词:
总目录
  • WCSB9︱2019(第九届)世界采样和混样大会 查看全文>>
  • 关于召开第十五届全国青年分析测试学术报告会的通知 查看全文>>
友情链接
基于多壁碳纳米管/纳米铜复合材料的电化学传感器测定槐米中芦丁
    点此下载全文
作者单位
李小蓉,郭惠,闫浩,李治,刘江涛,徐韵怡 陕西中医药大学药学院 
基金项目:陕西省自然科学基础研究计划项目(2019JQ-874);陕西中医药大学学科创新团队项目(2019-PY02);陕西省教育厅项目(19JK0232);陕西省高校科协青年人才托举计划项目(20170406);陕西中医药大学自然科学培育基金(2016PY19)
中文摘要:以Nafion-多壁碳纳米管(MWNTs)薄膜修饰玻碳电极,采用恒电位法在其表面电沉积纳米Cu,研制了一种新型的芦丁电化学传感器。采用循环伏安法和电化学阻抗谱研究传感器在铁氰化钾-亚铁氰化钾体系中的电化学行为,以考察传感器的电化学性能,采用扫描电镜对传感器表面的形态进行了研究,并利用差分脉冲伏安法测定芦丁的含量。实验结果表明,该传感器对芦丁有较好的催化作用。在优化实验条件下,对芦丁检测的线性范围为1.0×10-8~1.0×10-6 mol/L,检出限为8.4×10-9 mol/L(S/N=3),回收率为98.1% ~101%,该传感器制作简单,线性范围宽,灵敏度高,为槐米等样品中芦丁含量的检测提供了一种新的、行之有效的方法。
中文关键词:多壁碳纳米管  芦丁  纳米铜  Nafion
 
Detection of Rutin in Flos Sophorae Immaturus Using an Electrochemical Sensor Based on Multi walled Carbon Nanotube/Copper Nanocomposites
Abstract:A rutin electrochemical sensor was developed by electrodepositing copper nanoparticles on a glassy carbon electrode modified with multi walled carbon nanotubes(MWNTs)-Nafion.The electrochemical performance of the sensor was investigated by cyclic voltammetry and electrochemical impedance spectroscopy in potassium ferricyanide-potassium ferrocyanide system.The morphology of the sensor was studied by scanning electron microscopy,and differential pulse voltammetry was used for the detection of rutin.Results showed that the sensor had a good catalytic effect on rutin.Under the optimized conditions,the linear range of the sensor for rutin was from 1.0×10-8 mol/L to 1.0×10-6 mol/L,with a detection limit of 8.4×10-9 mol/L(S/N=3) and recoveries of 98.1%-101%.With the advantages of simple fabrication,wide linear range and high sensitivity,the sensor provided a new and effective method for the determination of rutin in Flos Sophorae Immaturus and other samples.
Key Words:multi walled carbon nanotubes  rutin  copper nanoparticles  Nafion
引用本文:李小蓉,郭惠,闫浩,李治,刘江涛,徐韵怡.基于多壁碳纳米管/纳米铜复合材料的电化学传感器测定槐米中芦丁[J].分析测试学报,2020,39(3):377-382.
摘要点击次数: 88
全文下载次数: 184
查看全文  查看/发表评论  下载PDF阅读器