Electrochemical Determination of Dicofol at Nickel Nanowire Modified Poly(p‐aminophenol) Film Electrode

Abstract

An electrochemical sensor was fabricated by construction of nickel nanowires on the surface of poly(p‐aminophenol) (PPAP) modified glassy carbon electrode. The electrochemical response of dicofol, a known pesticide and used for agricultural activities such as cyclic voltammetry and differential pulse voltammetry, were investigated and the results were compared with those obtained unmodified electrodes. Following the optimization of NaOH concentration, polymerization cycle number, Ni nanowire amount, the linear range for the dicofol was studied and found as 0.83–30.7 μmol L−1 (R2=0.9981) at Ni/PPAP/GCE with a 0.08 μmol L−1 detection limit according to S/N=3. Finally, the proposed Ni/PPAP/GCE sensor was successfully applied for the dicofol analysis in soil samples. The characterization of the developed surface was carried out by scanning electron microscopy and X‐Ray photoelectron spectroscopy.

Recent Advances in Nanoparticle-Based Optical Sensors for Detection of Pesticide Residues in Soil

“…It is possible to detect hexachlorobenzene residues in the soil at levels as low as 10 pM by using the substrate. Dursun et al [ 80 ] succeeded in fabricating an electrochemical sensor by combining nickel nanowires with poly(p-aminophenol)-modified glassy carbon electrodes. This electrochemical sensor can respond to dicofol with a linear range of 0.83–30.7 μM.…”

In situ electrochemical synthesis of graphene-poly(arginine) composite for p-nitrophenol monitoring

“…It is noticeable that for measuring higher concentration gradient p-nitrophenol samples under 800 mV, the catalytic current Ipa no longer increased or even weakened (data not shown). Electro-oxidation of p-nitrophenol may lead to in situ selfpolymerization, along with the irreversible adsorption of the oxidation product (Chen et al, 2008;Karabiberoglu et al, 2019). The great surface fouling could largely passivate the sensor.…”

Analytical methods to analyze pesticides and herbicides

“…An electrochemical sensor was developed by constructing nickel nanowires on a glassy carbon electrode (GCE) that was modified with poly(p‐aminophenol) (Karabiberoglu, Kocak, & Dursun, 2019). Under the optimized conditions, the sensor achieved a linear range for dicofol between 0.83 and 30.7 μmol/L ( R 2 = 0.9981) with an LOD of 0.08 μmol/L.…”