An original ferroferric oxide and gold nanoparticles-modified glassy carbon electrode for the determination of bisphenol A
作者： Edson R. Santana , Camila A. de Lima , Jamille V. Piovesan , Almir Spinelli
DOI: 10.1016/J.SNB.2016.09.003
关键词: Nanoparticle 、 Differential pulse voltammetry 、 Nanotechnology 、 Nuclear chemistry 、 Detection limit 、 Chloride 、 Electrode 、 Voltammetry 、 Materials science 、 Oxide 、 Colloidal gold
摘要: Abstract A novel glassy carbon electrode (GCE) modified with a film of ferroferric oxide nanoparticles (Fe3O4 NPs) over gold (Au NPs), both stabilized in polymer solution 3-n-propyl-4-picolinium silsesquioxane chloride (Si4Pic+Cl−), is presented for the electroanalytical determination bisphenol (BPA). At electrode, cyclic voltammograms BPA B-R buffer (pH 9.0) showed diffusion-controlled irreversible oxidation peak at around +0.470 V. Under optimized experimental conditions differential pulse voltammetry experiments, current was found to vary linearly concentration range 20–1400 nmol L−1 (R2 = 0.996) detection limit 7.0 nmol L−1. The Fe3O4 NPs-Si4Pic+Cl−/Au NPs-Si4Pic+Cl−/GCE successfully employed different commercial plastic samples. Satisfactory recoveries were obtained 90–120%, agreement comparative technique (UV–vis spectroscopy).
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