|
|||||
|
|
The Use of Voltammetry for Sorption Studies of Arsenic (III) Ions by Magnetic Beads Functionalized with Nucleobase Hydrazide Derivatives |
|
| Authors: | Simona Sawan Khalil Hamze Ali Youssef Kamal Bouhadir Abdelhamid Errachid Rita Maalouf Nicole Jaffrezic-Renault |
| Institution: | 1. Institut des Sciences Analytiques, Université de Lyon, Claude Bernard Lyon 1, UMR 5280, CNRS –, 5, rue de la Doua, 69100 Villeurbanne, France
Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University –, Louaize, Zouk Mosbeh, Lebanon;2. Department of Chemistry, American University of Beirut, Beirut, 11-0236 Lebanon.;3. Institut des Sciences Analytiques, Université de Lyon, Claude Bernard Lyon 1, UMR 5280, CNRS –, 5, rue de la Doua, 69100 Villeurbanne, France;4. Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University –, Louaize, Zouk Mosbeh, Lebanon |
| Abstract: | In this work the interaction characteristics of nucleobases with As(III) are studied. Novel materials consisting of magnetic nanoparticles (MNPs) functionalized with adenine hydrazide (AH), guanine hydrazide (GH) and uracil hydrazide (UH) were elaborated. The adsorption isotherms were investigated electrochemically and it was shown that the adsorption capacity of the nanoparticles towards arsenic (III) increased in the following order: AH<UH<GH. The electrochemical detection of As(III) using the GH functionalized MNPs offered better results compared with the other functionalizations, with a sensitivity of 1.92 μA μg−1 L and a limit of detection of 1.6 μg/L (21 nM). |
| Keywords: | adsorption isotherm arsenic Fe3O4 nanoparticles nucleobase-heavy metal interaction nucleobase hydrazides |