AI Article Synopsis
- A portable electrochemical sensor was developed to detect pesticide residues, specifically carbendazim (CBZ), in various samples such as biological materials, water, and vegetables.
- The sensor utilized a gadolinium oxide/functionalized carbon nanosphere composite on a glassy carbon electrode, showing strong electrocatalytic activity and sensitivity for CBZ detection due to its high electrochemical properties.
- The sensor demonstrated a wide detection range (0.5-552 μM), a low level of detection (0.009 μM L), and excellent recovery rates (96.27-99.44%) in real samples, making it a practical solution for monitoring pesticide residues.
Article Abstract
In this study, we developed a portable electrochemical sensor for realizing the pesticide residue in biological, environmental, and vegetable samples. A lower concentration of carbendazim pesticide (CBZ) was electrochemically exposed by newly developed gadolinium oxide/functionalized carbon nanosphere modified glassy carbon electrode (GdO/f-CNS/GCE). The GdO/f-CNS composite was prepared by two-pot ultrasonic-assisted co-precipitation method and characterized by various physicochemical analytical techniques. In addition, the electrocatalytic activity of the composite was investigated by cyclic voltammetry (CV) towards the detection of CBZ. Besides, the GdO/f-CNS/GCE exhibited excellent electrocatalytic capability and sensitivity towards the oxidation of CBZ due to its high electrochemical active surface area, good conductivity, and fast electron transfer ability. A wide linear range of CBZ (0.5-552 μM) was attained with a low level of detection (LOD) of 0.009 μM L and exceptional stability of 93.41%. The proposed sensor exemplifies practical feasibility in blood serum, water, and vegetable samples with an remarkable recovery range of 96.27-99.44% and primary current response of ∼91% after 15 days.
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| http://dx.doi.org/10.1016/j.talanta.2021.123028 | DOI Listing |
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