Development of an extractive spectrophotometric method for uranium using MWCNTs as solid phase and arsenazo(III) as chromophore |
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Authors: | Faheem Shah Mustafa Soylak Tasneem Gul Kazi Hassan Imran Afridi |
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Affiliation: | 1. Department of Chemistry, Erciyes University, Fen Fakultesi, 38039, Kayseri, Turkey 2. National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
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Abstract: | Multiwalled carbon nanotubes (MWCNTs) based sorptive extraction method for uranium (U) from aqueous solutions has been developed. The proposed method was optimized by evaluating the analytical parameters including pH, eluent type, flow rates of sample and eluent, etc. The adsorption capacity of MWCNTs was found to be 9.80 μg g?1, while the detection limit based on 3σ criterion was 1.9 μg L?1. The presented method was applied for the estimation of U in ore sample. Effect of potentially interfering ions was also studied and were found to inert not interfering with U during the analysis. The results suggest that MWCNTs can be used as reliable solid phase for preconcentration and arsenazo-III as chromophore for U spectrometric determination from aqueous solutions. |
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