Adsorptive Stripping Voltammetry for Trace Determination of Quinalphos Employing Silicon Carbide Nanoparticles Modified Glassy Carbon Electrode

Abstract

A silicon carbide nanoparticle‐coated glassy carbon electrode (SiCNPs‐GCE) was employed for electrochemical determination of Quinalphos (QNP) using different electroanalytical techniques. QNP showed an enhancement in the reduction peak current at SiCNPs modified GCE in pH 7.0 (BR Buffer). The peak current was found to be linear with the QNP concentration in the range from 6.69×10−9 to 1.34×10−6 M (r=0.995) with detection limit of 1.34×10−9 M (S/N=3). The developed sensor (SiCNPs‐GCE) was employed for QNP determination in tap water, lake water, soil, mango as well as in biological samples.

Determination of Carbendazim by Adsorptive Stripping Differential Pulse Voltammetry Employing Glassy Carbon Paste Electrode Modified with Graphene and Amberlite XAD 2 Resin

“…Thus, CMEs have unfolded new genre of working electrodes in electroanalytical chemistry 1, 2. Numerous CMEs have been previously employed by our research group for sensing metal ions 3–5, drugs 6–12 and pesticides 13. Among CMEs, carbon paste electrodes (CPEs) are preferred as sensors as they possess ease of fabrication, quick surface renewal, low cost, good stability and safe disposability even after the use unlike previously employed mercury electrodes.…”

A Highly Sensitive Determination of Parathion Pesticide by Solid‐Phase Extraction on a Silicon Carbide Nanoparticles Modified Electrode

“…A pair of reversible oxidation and reduction peaks were observed at +0.26 and +0.17 V respectively, for the bare GCE (curve a). After being modified with the SiC NPs‐CS nanocomposite (curve b), it showed obvious increased redox peak currents due to SiC NPs‐CS nanocomposite which dramatically increase the electrode surface area and possesses good electrical conductivity . Figure B shows the EIS plots of bare GCE, SiC NPs‐CS nanocomposites/GCE at 5 mmol/dm 3 K 3 [Fe(CN) 6 ]/K 4 [Fe(CN) 6 ] in 0.1 M KCl.…”

“…After being modified with the SiC NPs-CS nanocomposite (curve b), it showed obvious increased redox peak currents due to SiC NPs-CS nanocomposite which dramatically increase the electrode surface area and possesses good electrical conductivity. [25] Figure 2B shows the EIS plots of bare GCE, SiC NPs-CS nanocomposites/GCE at 5 mmol/dm 3…”

“…Silicon carbide is a promising semiconductor material with a wide band gap and a series of excellent catalyst supports, having stable physical and chemical properties, high electrical conductivity, high thermal conductivity, good absorption properties, high aspect ratio and no toxicity. [21][22][23][24][25] In addition, silicon carbide modified electrodes have attracted more and more attention in the field of electrochemical analysis due to its catalytic oxidation, biocompatibility, wider potential window and lower background current. [26,27] Herein, we reports that the construction of a novel electrochemical sensor made from silicon carbide nanoparticles modified glassy carbon electrode for the direct detection of parathion.…”

“…Therefore, the main content of this article is to find a suitable electrochemical material for electrode modification that can enrich pesticides so as to improve the sensitivity of the electrode to pesticides. Silicon carbide is a promising semiconductor material with a wide band gap and a series of excellent catalyst supports, having stable physical and chemical properties, high electrical conductivity, high thermal conductivity, good absorption properties, high aspect ratio and no toxicity . In addition, silicon carbide modified electrodes have attracted more and more attention in the field of electrochemical analysis due to its catalytic oxidation, biocompatibility, wider potential window and lower background current ,.…”