A biocompatible nano TiO2/nafion composite modified glassy carbon electrode for the detection of fenitrothion

Kumaravel, A.; Chandrasekaran, M.

doi:10.1016/j.jelechem.2010.10.013

Cited by 89 publications

(37 citation statements)

References 68 publications

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“…This result is in agreement with the literature data [5] [7]. When cyclic voltammetry is realized on FT during scanning potential in cathodic domain (Figure 3), one can observe the presence of an irreversible peak at −0.79 V vs Ag/AgCl/KCl 1 M corresponding to 4 electrons transfer to nitro group [3] [4] [9] [15]. This result agrees with previous work on the electrochemical detection of methylparathion and its metabolite [7].…”

Section: Voltammetric Behavior Of Mnp On Cfmesupporting

confidence: 92%

“…Thus, to limit the impact of pesticides on the environment and human health, analytical techniques have been developed to detect their presence and quantify pesticide residues in waters, soils, foods. The commonly used analytical methods are the high-performance liquid chromatography (HPLC), mass spectrometry (MS), gas chromatography (GC) or coupled techniques GC-MS and ELISA [3] [4] [6] [7]. However, these techniques require means huge, skilled technicians, very long analysis time, a step of sample pretreatment and they are not suitable for analysis of organophosphate pesticides due to their instability.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Sensors Based on Modification of Carbon Fiber Microelectrode by Nickel Phthalocyanine Polymer for 3-Methyl-4-Nitrophenol Analysis in Water

Bako¹,

Kabore²,

Tapsoba³

2017

MSA

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Abstract3-methyl-4-nitrophenol (MNP) is the main by-product of the organophosphate insecticide fenitrothion (FT), used in locust control. MNP is highly toxic because it is an endocrine disruptor and then may cause adverse in the biological systems. Then, it is necessary to develop analytical methods for determination of this pollutant in the environment. In this sense, we reported herein the development of an electrochemical sensor for the detection of 3-methyl-4-nitrophenol (MNP), one of the metabolites of fenitrothion (FT), by using naked and modified carbon fiber microelectrode (CFME) by nickel tetrasulfonated phthalocyanine polymer (CFME/p-NiTSPc). The voltammogram showed that MNP presents one irreversible anodic peak corresponding to the oxidation of the phenol group at 0.9 V vs Ag/AgCl. The effect of pH of the buffer on the peak current and SWV parameters such as frequency, scan increment and pulse amplitude were investigated in order to optimize the electrochemical response of the sensor. The obtained results lead to the following optimum value: pH = 6; frequency = 25 Hz, pulse amplitude = 50 mV, scan increment = 10 mV. With these optimum values, the calibration curves show that the peak current varied linearly upon MNP concentration leading to a limit of detection (LoD) for naked CFME close to 3 µg/L whereas for CFME modified by p-NiTSPc, it reaches 0.75 µg/L. This results prove that the presence of p-NiTSPc increasing the sensitivity of the sensor could be used to monitor 3-methyl-4-nitro-phenol residue in real matrix.

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Section: Voltammetric Behavior Of Mnp On Cfmesupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Electrochemical Sensors Based on Modification of Carbon Fiber Microelectrode by Nickel Phthalocyanine Polymer for 3-Methyl-4-Nitrophenol Analysis in Water

Bako¹,

Kabore²,

Tapsoba³

2017

MSA

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“…In crop fi eld, organophosphorus and carbamate degradation can be enhanced by TiO 2 nanoparticles. Some of the nanomaterials which are successfully used are multiwalled carbon nanotube coated electrodes (Sundari and Manisankar 2011 ), nanoparticle carbon electrodes with magnetic composite and nano-TiO 2 (Kumaravel and Chandrasekaran 2011 ). Nano-iron and nano-carbons are used for water and soil purifi cation and remediation (Karn et al 2009 ).…”

Section: Water and Soil Resources Conservationmentioning

confidence: 99%

Nanobiotechnology in Agricultural Development

Resham

Khalid

Gul

2015

PlantOmics: The Omics of Plant Science

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“…Currently, several authors are working in pesticide analysis methods' optimization. Magnetic composite nanoparticle-modified screen printed carbon electrodes (Gan et al, www.intechopen.com 2010), electrodes coated with multiwalled carbon nanotubes (Sundari & Manisankar, 2011) or nano TiO2 (Kumaravel & Chandrasekaran, 2011) are some examples of nanomaterials which have being successfully used. They all act as sensors of pesticides.…”

Section: Water and Soil Resources Remediationmentioning

confidence: 99%