| 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 |
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| 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) |
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| 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 |
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| Detection of Rutin in Flos Sophorae Immaturus Using an Electrochemical Sensor Based on Multi walled Carbon Nanotube/Copper Nanocomposites |
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| 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. |
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