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

doi:10.13208/j.electrochem.131105

Journal of Electrochemistry ›› 2014, Vol. 20 ›› Issue (5): 482-485.doi: 10.13208/j.electrochem.131105

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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^*

Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China

Received:2013-11-05 Revised:2014-01-03 Online:2014-10-28 Published:2014-01-08
Contact: QU Jian-ying E-mail:qujy@henu.edu.cn

Abstract

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.

Key words: poly-alizarin red, multi-walled carbon nanotubes, folic acid

CLC Number:

O646

DU Xue-ping, LOU Tong-fang, DONG Ying, QU Jian-ying*. 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.

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

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