Development of an extractive spectrophotometric method for uranium using MWCNTs as solid phase and arsenazo(III) as chromophore


Shah F., SOYLAK M., Kazi T. G. , Afridi H. I.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, vol.296, no.3, pp.1239-1245, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 296 Issue: 3
  • Publication Date: 2013
  • Doi Number: 10.1007/s10967-012-2376-8
  • Journal Name: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1239-1245
  • Keywords: Carbon nanotubes, Uranium, Solid phase, Pre-concentration, Arsenazo-III, MULTI-WALLED CARBON, AQUEOUS-SOLUTIONS, DISODIUM SALT, WATER SAMPLES, TRACE AMOUNTS, VI SORPTION, ADSORPTION, PRECONCENTRATION, NANOTUBES, THORIUM
  • Erciyes University Affiliated: Yes

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 mu g g(-1), while the detection limit based on 3 sigma criterion was 1.9 mu g 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.