Electrochemical Behavior and Determination of Chlorogenic Acid Based on Multi-Walled Carbon Nanotubes Modified Screen-Printed Electrode

Xiaoyan Ma; Hongqiao Yang; Huabin Xiong; Xiaofen Li; Jinting Gao; Yuntao Gao

doi:10.3390/s16111797

Electrochemical Behavior and Determination of Chlorogenic Acid Based on Multi-Walled Carbon Nanotubes Modified Screen-Printed Electrode

Sensors (Basel). 2016 Oct 27;16(11):1797. doi: 10.3390/s16111797.

Authors

Xiaoyan Ma^{1

2}, Hongqiao Yang^{3

4}, Huabin Xiong^{5

6}, Xiaofen Li^{7

8}, Jinting Gao^{9

10}, Yuntao Gao^{11

12}

Affiliations

¹ The Engineering Laboratory of Polylactic Acid-Based Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, China. 18788481659@163.com.
² Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China. 18788481659@163.com.
³ The Engineering Laboratory of Polylactic Acid-Based Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, China. yanghqiao2010227@163.com.
⁴ Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China. yanghqiao2010227@163.com.
⁵ The Engineering Laboratory of Polylactic Acid-Based Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, China. xionghuabin@ynni.edu.cn.
⁶ Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China. xionghuabin@ynni.edu.cn.
⁷ The Engineering Laboratory of Polylactic Acid-Based Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, China. wjplxf24@163.com.
⁸ Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China. wjplxf24@163.com.
⁹ The Engineering Laboratory of Polylactic Acid-Based Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, China. 15198774152@163.com.
¹⁰ Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China. 15198774152@163.com.
¹¹ The Engineering Laboratory of Polylactic Acid-Based Functional Materials of Yunnan, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, China. gaoyuntao@ynni.edu.cn.
¹² Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China. gaoyuntao@ynni.edu.cn.

Abstract

In this paper, the multi-walled carbon nanotubes modified screen-printed electrode (MWCNTs/SPE) was prepared and the MWCNTs/SPE was employed for the electrochemical determination of the antioxidant substance chlorogenic acids (CGAs). A pair of well-defined redox peaks of CGA was observed at the MWCNTs/SPE in 0.10 mol/L acetic acid-sodium acetate buffer (pH 6.2) and the electrode process was adsorption-controlled. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods for the determination of CGA were proposed based on the MWCNTs/SPE. Under the optimal conditions, the proposed method exhibited linear ranges from 0.17 to 15.8 µg/mL, and the linear regression equation was Ipa (µA) = 4.1993 C (×10^-5 mol/L) + 1.1039 (r = 0.9976) and the detection limit for CGA could reach 0.12 µg/mL. The recovery of matrine was 94.74%-106.65% (RSD = 2.92%) in coffee beans. The proposed method is quick, sensitive, reliable, and can be used for the determination of CGA.

Keywords: chlorogenic acid; multi-walled carbon nanotubes; screen-printed electrode.