The Construction of Electrochemical Sensor Based on Single-Layer Tungsten Disulfide and Functionalized Multi-Walled Carbon Nanotubes and Its Application in Deteetion of Carbendazim in Kiwi Fruit
A simple, highly sensitive sensor for the determination of carbendazim in kiwi fruit based on single-layer tungsten disulfide(WS2) and amino functionalized multi-walled carbon nanotubes(fMWCNTs) modified glass carbon electrodes was established.The as-synthesized nanocomposites were characterized by cyclic voltammetry.The electrochemical behavior of carbendazim at different electrodes was investigated by voltamme-try.A differential pulse voltammetry(DPV) method was developed for the determination of MBC.The experi-mental results indicated that the WS2-f MWCNTs/GCE showed a wide linearity of 1.0×10-7 mol/L to 1.0× 10-5 mol/L with a detection limit of 1.1×10-8 mol/L( signal-to-noise ratio=3) and the quantitation limit was found to be 3.7×10-8 mol/L(signal-to-noise ratio=10).Analytical performance was also applied to spiked kiwi samples,the recovery rate was 89.0%-102%.The method shows good reproducibility and high sensitivity in the detection of carbendazim in the real sample kiwi fruit.
carbendazimWS2fMWCNTselectrochemical sensingkiwi fruit
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维普
