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

Authors

Xue-ping DU, Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China;
Tong-fang LOU, Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China;
Ying DONG, Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China;
Jian-ying QU, Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China;Follow

Corresponding Author

Jian-ying QU(lilyqujy@yahoo.com.cn)

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.

Graphical Abstract

Keywords

poly-alizarin red, multi-walled carbon nanotubes, folic acid

DOI Link

https://doi.org/10.13208/j.electrochem.131105

Publication Date

2014-10-28

Online Available Date

2014-01-08

Revised Date

2014-01-03

Received Date

2013-11-05

Recommended Citation

Xue-ping DU, Tong-fang LOU, Ying DONG, Jian-ying QU. Determination of Folic Acid by Composite Film Electrode Modified with Poly-Alizarin Red and Multi-walled Carbon Nanotubes[J]. Journal of Electrochemistry, 2014 , 20(5): 482-485.
DOI: 10.13208/j.electrochem.131105
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss5/12