Electrochemical Quantification of Lead Adsorption on TiO2 Nanoparticles |
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Authors: | Farideh Hosseini Narouei Kevin A. Kirk Silvana Andreescu |
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Affiliation: | Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699-5810 USA |
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Abstract: | This work describes a rapid easy-to-use electrochemical method for quantifying lead (Pb2+) adsorption on metal oxide nanoparticles (NPs), demonstrated here for titanium dioxide (TiO2). The method was able to quantify Pb2+ adsorption for concentrations as low as 0.95 μM, and up to 200 μM in NP dispersions, and to differentiate ion uptake in the presence and absence of a natural organic material, humic acid (HA). The method was selective for Pb2+ against Cu2+, As3+, Zn2+, Cd2+ and Cr3+ ions when measured in the specific potential range from −0.4 to −0.6 V and was successfully demonstrated in water and home-collected dust. |
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Keywords: | Pb adsorption nanoparticles differential pulse voltammetry portable electrodes |
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