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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