Direct Electrochemical Analysis of 3-Methyl-4-Nitrophenol in Water Using Carbon Fiber Microelectrode Modified with Nickel Tetrasulfonated Phthalocyanine Complex
This study reports a tetrasulfonated nickel phthalocyanine complex (p-NiTSPc) modified carbon fiber microelectrode (CFME) for the detection of 3-methyl-4-nitrophenol (MNP) at low potentials. The voltammogram of MNP showed a cathodic peak at ？0.86 V vs Ag/AgCl corresponding to the reduction of the nitro group. An electrocatalytic activity towards the MNP redox process was observed in the presence of p-NiTSPc. The effects of support electrolyte pH, frequency, scan increment, and pulse amplitude on square wave voltammetry (SWV) peak current were studied and optimized to improve the sensor’s electrochemical response. With these optimized parameters, the calibration curve showed that the peak current increased linearly with MNP concentration, with a limit of detection (LoD) of 0.025 μg/L. Therefore, we report, for the first time, an electrochemical LoD of MNP below 0.1 μg/L, the current regulatory limit for drinkable water.
References
[1]
Bako, Y.F.R., Kabore, B. and Tapsoba, I. (2017) Electrochemical Sensors Based on Modification of Carbon Fiber Microelectrode by Nickel Phthalocyanine Polymer for 3-Methyl-4-Nitrophenol Analysis in Water. Materials Sciences and Applications, 8, 798-810. https://doi.org/10.4236/msa.2017.811058
[2]
Bako, Y.F.R., Tapsoba, I., Pontie, M. and Chelaghmia, M.L. (2018) Direct Electrooxidation of 3-Methyl-4-Nitrophenol (MNP) at Carbon Fiber Microelectrode (CFME). International Journal of Electrochemical Science, 13, 8056-8071. https://doi.org/10.20964/2018.08.35
[3]
Ondo Zue Abaga, N., Alibert, P., Dousset, S., Savadogo, P.W., Savadogo, M. and Sedogo, M. (2011) Insecticide Residues in Cotton Soils of Burkina Faso and Effects of Insecticides on Fluctuating Asymmetry in Honey Bees (Apis mellifera Linnaeus). Chemosphere, 83, 585-592. https://doi.org/10.1016/j.chemosphere.2010.12.021
[4]
Dione, M.M., Djouaka, R., Mbokou, S.F., Ilboudo, G.S., Ouedraogo, A.A., Dinede, G., et al. (2023) Detection and Quantification of Pesticide Residues in Tomatoes Sold in Urban Markets of Ouagadougou, Burkina Faso. Frontiers in Sustainable Food Systems, 7, Article 1213085. https://doi.org/10.3389/fsufs.2023.1213085
[5]
Seebunrueng, K., Santaladchaiyakit, Y. and Srijaranai, S. (2014) Vortex-Assisted Low-Density Solvent Based Demulsified Dispersive Liquid-Liquid Microextraction and High-Performance Liquid Chromatography for the Determination of Organophosphorus Pesticides in Water Samples. Chemosphere, 103, 51-58. https://doi.org/10.1016/j.chemosphere.2013.11.024
[6]
Guo, X., Zhou, H., Fan, T. and Zhang, D. (2015) Electrochemical Detection of P-Nitrophenol on Surface Imprinted Gold with Lamellar-Ridge Architecture. Sensors and Actuators B: Chemical, 220, 33-39. https://doi.org/10.1016/j.snb.2015.05.042
[7]
Pérez-Fernández, B., Costa-García, A. and Muñiz, A.d.l.E. (2020) Electrochemical (Bio)sensors for Pesticides Detection Using Screen-Printed Electrodes. Biosensors, 10, Article No. 32. https://doi.org/10.3390/bios10040032
[8]
Ensafi, A.A., Rezaloo, F. and Rezaei, B. (2017) Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified-Glassy Carbon Electrode. Electroanalysis, 29, 2839-2846. https://doi.org/10.1002/elan.201700406
[9]
Kumaravel, A. and Murugananthan, M. (2021) Electrochemical Detection of Fenitrothion Usingnanosilver/Dodecane Modified Glassy Carbon Electrode. Sensors and Actuators B: Chemical, 331, Article ID: 129467. https://doi.org/10.1016/j.snb.2021.129467
[10]
Han, J., Zhang, Y., Chen, Z., Zhang, A. and Shi, X. (2023) Synergistic Effect of Nitrogen and Sulfur Co-Doped Holey Graphene for Sensitive Fenitrothion Detection Supported by DFT Study. Microchemical Journal, 193, Article ID: 109218. https://doi.org/10.1016/j.microc.2023.109218
[11]
Mbokou, S.F., Pontié, M., Razafimandimby, B., Bouchara, J., Njanja, E. and Tonle Kenfack, I. (2016) Evaluation of the Degradation of Acetaminophen by the Filamentous Fungus Scedosporium dehoogii Using Carbon-Based Modified Electrodes. Analytical and Bioanalytical Chemistry, 408, 5895-5903. https://doi.org/10.1007/s00216-016-9704-8
[12]
Pontie, M., Lecture, H. and Bedioui, F. (1999) Improvement in the Performance of a Nickel Complex-Based Electrochemical Sensor for the Detection of Nitric Oxide in Solution. Sensors and Actuators B: Chemical, 56, 1-5. https://doi.org/10.1016/s0925-4005(99)00027-1
[13]
Bard, A.J., Faulkner, L.R. and White, H.S. (2022) Electrochemical Methods: Fundamentals and Applications. 3rd Edition, John Wiley & Sons.
[14]
Rani, A., Banerjee, B. and Haldar, K.K. (2025) AuRh Based Bimetallic Catalyst for Electrochemical Nitroarene Reduction: Reaction Development and Mechanistic Insights. Discover Catalysis, 2, Article No. 13. https://doi.org/10.1007/s44344-025-00015-6
Du, J., Yue, R., Ren, F., Yao, Z., Jiang, F., Yang, P., et al. (2013) Simultaneous Determination of Uric Acid and Dopamine Using a Carbon Fiber Electrode Modified by Layer-by-Layer Assembly of Graphene and Gold Nanoparticles. Gold Bulletin, 46, 137-144. https://doi.org/10.1007/s13404-013-0090-0
[17]
Simonetti, S.O., Beil, S.B. and Waldvogel, S.R. (2025) Nitro Substrates in Reductive Electrosynthesis: A Review. ACS Electrochemistry, 1, 805-818. https://doi.org/10.1021/acselectrochem.5c00081
[18]
Disley, J., Gil-Ramirez, G. and Gonzalez-Rodriguez, J. (2025) A Review of Different Removal Techniques for Pesticides Found in European Waters Identified by the European Environmental Agency. Environmental Science & Policy, 172, Article ID: 104194. https://doi.org/10.1016/j.envsci.2025.104194
[19]
Bako, Y.F.R., Mbokou, S.F., Kaboré, B., Tapsoba, I. and Pontié, M. (2024) Indirect Electroanalysis of 3-Methyl-4-Nitrophenol in Water Using Carbon Fiber Microelectrode Modified with Nickel Tetrasulfonated Phthalocyanine Complex. Materials Sciences and Applications, 15, 25-35. https://doi.org/10.4236/msa.2024.152003
[20]
Bako, Y.F.R., Silga, J.T., Mbokou Foukmeniok, S., Pontié, M. and Tapsoba, I. (2023) Molecular Imprinted Polymer Modified Carbon Ultramicroelectrode for a Selective Detection of 3-Methyl-4-Nitrophenol and Its Bioremediation in a Fungal Microbial Fuel Cell. Journal of Applied Electrochemistry, 54, 1253-1265. https://doi.org/10.1007/s10800-023-02041-4
