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研究论文

聚茜素红-多壁碳纳米管复合膜修饰电极的研制及叶酸含量测定

  • 杜学萍 ,
  • 娄童芳 ,
  • 董莹 ,
  • 屈建莹
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  • 河南大学化学化工学院环境与分析科学研究所,河南 开封 475004

收稿日期: 2013-11-05

  修回日期: 2014-01-03

  网络出版日期: 2014-01-08

基金资助

河南省教育厅科学技术研究重点计划项目(No.13A150077)资助

Determination of Folic Acid by Composite Film Electrode Modified with Poly-Alizarin Red and Multi-walled Carbon Nanotubes

  • DU Xue-Ping ,
  • LOU Tong-Fang ,
  • DONG Ying ,
  • QU Jian-Ying
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  • Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China

Received date: 2013-11-05

  Revised date: 2014-01-03

  Online published: 2014-01-08

摘要

采用电聚合方法将茜素红(AR)非共价修饰到多壁碳纳米管(MWCNTs)上,制得了PAR/MWCNTs/GC电极,该电极对叶酸(FA)具有良好的电催化作用. 结果表明,在最佳实验条件下,在-0.63 V处叶酸还原峰电流与浓度(1.25×10-6 ~ 4.00×10-5 mol·L-1)呈现良好线性关系,相关系数0.9985. 用标准加入法检测了回收率,其值达92.0% ~ 102.0%. 该电极制作简单,有良好的稳定性.

本文引用格式

杜学萍 , 娄童芳 , 董莹 , 屈建莹 . 聚茜素红-多壁碳纳米管复合膜修饰电极的研制及叶酸含量测定[J]. 电化学, 2014 , 20(5) : 482 -485 . DOI: 10.13208/j.electrochem.131105

Abstract

The novel modified electrode was fabricated by electropolymerizing alizarin red onto the surface of multi-walled carbon nanotubes on glassy carbon electrode surface, which exhibited good electrocatalytic activity for folic acid. The experimental results showed that the reduction peak current of folic acid at -0.63 V was linear to its concentration over the range of 1.25×10-6 ~ 4.00×10-5 mol·L-1 in the optimized experimental conditions (R = 0.9985). Test for recovery was carried out by standard addition method, and the recovery ratios were in the range of 92.0% ~ 102.0%. The modified electrode was prepared simply with excellent stability, which provides a new feasible method for determination of folic acid.
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