Afroozeh Arabi; Alireza Mohadesi; Mohammad Ali Karimi; Mehdi Ranjbar
Abstract
In this study, a new Zeolite Al/Na (ZAN) was synthesized and characterized and then a new modified Carbon Paste Electrode with ZAN was made to determine Acetaminophen. Electrochemical studies using Linear Sweep Voltammetry and differential pulse voltammetry were used to determine electrochemical Acetaminophen ...
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In this study, a new Zeolite Al/Na (ZAN) was synthesized and characterized and then a new modified Carbon Paste Electrode with ZAN was made to determine Acetaminophen. Electrochemical studies using Linear Sweep Voltammetry and differential pulse voltammetry were used to determine electrochemical Acetaminophen . In the presence of Acetaminophen , modified electrode with ZAN shows a specific anodic peak at ~ 0.59 volts which is the result of using electrocatalytic oxidation of Acetaminophen . The determination limit of this method to measure Acetaminophen was 5.8 µM, the relative standard deviation for 7 repeated measurements was 1.1 % and linear range of the calibration to measure Acetaminophen was 10 up to 115 µM . for the characterization of ZAN nanostructures we used SEM (Scanning Electron Microscopy), DLS (Dynamic Light Scattering) and FT-IR (Fourier-Transform Infrared spectroscopy).
Foroozan Hasanpour; Mina Teimouri; Akram Eghbali
Volume 5, Issue 2 , September 2018, , Pages 56-61
Abstract
Essential oil of bentazon- treated plants were extracted and herbicide content analyzed by electrochemical method. For this propose, carbon paste electrode was modified using ZnFe2O4 anchored on reduced graphene oxide which synthesized by solvothermal approach. The nature and morphology of nanoparticles ...
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Essential oil of bentazon- treated plants were extracted and herbicide content analyzed by electrochemical method. For this propose, carbon paste electrode was modified using ZnFe2O4 anchored on reduced graphene oxide which synthesized by solvothermal approach. The nature and morphology of nanoparticles were characterized using XRD, FT-IR and Fe- SEM image. Under optimal experimental condition, modified electrode produces powerful oxidation signal for bentazon at +0.95 V (vs. Ag/AgCl). The anodic current was increased linearly with bentazon concentration in the range of 0.1 -20.0 µmol L-1 with a detection limit of 0.07 µmol L-1. The practical usage of modified electrode was evaluated by electro analysis of extracted bentzon residues at three applied doses which revealed reasonable results.