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Original scientific paper

https://doi.org/10.5562/cca1901

Electrochemical Behaviors and Electrochemical Determination of 1-naphthaleneacetic Acid at an Ionic Liquid Modified Carbon Paste Electrode

Cheng-Qian Duan ; Key Lab of Energy Sources and Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, People's Republic of China
Yan-Mei Zhang ; Key Lab of Energy Sources and Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, People's Republic of China
Zuo-Ning Gao ; Key Lab of Energy Sources and Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, People's Republic of China


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Abstract

Electrochemical behaviors of 1-naphthaleneacetic acid (NAA) at an ionic liquid N-butyl-pyridinium hexafluorophosphate (BPPF6/CPE) modified carbon paste electrode was investigated by cyclic voltammetry (CV) and further used for NAA sample determination. The experimental results showed that NAA at both the bared and the modified electrode showed an irreversible oxidation process, but at the modified electrode it exhibited an enhanced electrochemical response towards its electrochemical oxi-dation. BPPF6/CPE was characterized by electrochemical impedance spectroscopy (EIS). At the same time, the electrochemical kinetic parameters were determined at both electrodes. The oxidation peak cur-rents increased linearly with NAA concentration range from 2.0 × 10–5 to 4.0 × 10–4 mol dm–3 with the detection limit (S/N = 3) of 1.690 × 10–7 mol dm–3 under the optimized experiment conditions. The pro-posed method was successfully applied for NAA content determination in both commercial formulations and the soil samples. (doi: 10.5562/cca1901)

Keywords

1-naphthaleneacetic acid, ionic liquid modified carbon paste electrode, electrochemistry, electrochemical determination

Hrčak ID:

80409

URI

https://hrcak.srce.hr/80409

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