Anodic Stripping Voltammetric Determination of Iron(II) at a Carbon Paste Electrode Modified with Dithiodianiline (DTDA) and Gold Nanoparticles (GNP) |
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Authors: | Mohammad Bagher Gholivand Behrooz Geravandi Mohammad Hadi Parvin |
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Affiliation: | Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran tel: +988314274557, fax: +988314274559 |
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Abstract: | A differential pulse anodic stripping voltammetric procedure was developed for the determination of trace amounts of iron(II) in the presence of iron(III) at a carbon paste electrode (CPE) modified with dithiodianiline and gold nanoparticle. At the pH working of 3.0, a wide concentration range from 0.1 nM to 100 nM was observed with the detection limit of 0.05 nM. The relative standard deviation for a solution containing 50 nM of iron(II) was found to be 3.11 % (n=9). Possible interferences from the coexisting ions were also investigated. The validity of the method and applicability of the sensor were successfully tested by determining of iron(II) in lentil, wheat seed and barley seed samples. |
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Keywords: | Modified carbon paste electrode (MCPE) Gold nanoparticles (GNP) Differential pulse voltammetry (DPV) Dithiodianiline (DTDA) |
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