The Effect of Type and Concentration of Surfactant and Ligand on Uranium (VI) Cloud-Point Extraction (CPE) from Aqueous Solutions (Short Communication)

In this article cloud-point extraction (CPE) was used with chelating agent to extract uranium from aqueous solutions. The methodology used is based on the formation of metal complexes soluble in a micellar phase of surfactant. The metal ions complexes are then extracted into the surfactant-rich phase at a temperature above the cloud-point temperature. The effect of type of surfactants and ligands on extraction efficiency at constant condition (pH =6, surfactant concentration of 0.5 % (w/v), chelating agent concentration of 1.5 × 10-3 M, incubation time of 20 min, equilibrium temperature of 50˚C, centrifugation time of 10 min) were studied and the best surfactant and ligand was identified. Then, optimum concentration of surfactant and ligand together with the other optimal conditions of extraction was determined. By using CPE method and obtained optimal conditions, determination of uranium in water samples with a detection limit of 0.15μg L-1 was conducted.

[1]  Ding Yaping,et al.  Determination of lead and cadmium in water samples by cloud point extraction prior to flame atomic absorption spectrometry determination , 2009 .

[2]  Y. Yamini,et al.  Simultaneous preconcentration and determination of U(VI), Th(IV), Zr(IV) and Hf(IV) ions in aqueous samples using micelle-mediated extraction coupled to inductively coupled plasma-optical emission spectrometry. , 2008, Journal of hazardous materials.

[3]  Y. Yamini,et al.  Development of cloud point extraction for simultaneous extraction and determination of gold and palladium using ICP-OES. , 2008, Journal of hazardous materials.

[4]  M. Mirzazadeh,et al.  Micelle Mediated Methodology for the Determination of Heavy Metals in Real Samples by Flame Atomic Absorption Spectrometry , 2008 .

[5]  G. Cote,et al.  Temperature-induced surfactant- mediated pre-concentration of uranium assisted by complexation , 2006 .

[6]  S. Pillai,et al.  Simultaneous preconcentration of uranium(VI) and thorium(IV) from aqueous solutions using a chelating calix[4]arene anchored chloromethylated polystyrene solid phase. , 2006, Talanta.

[7]  Y. Yamini,et al.  Cloud point extraction and simultaneous determination of zirconium and hafnium using ICP-OES. , 2006, Journal of colloid and interface science.

[8]  T. Rao,et al.  Preconcentration techniques for uranium(VI) and thorium(IV) prior to analytical determination-an overview. , 2006, Talanta.

[9]  M. Bezerra,et al.  A Pre-Concentration Procedure Using Cloud Point Extraction for the Determination of Uranium in Natural Water , 2006 .

[10]  M. Ramezani,et al.  Preconcentration and determination of ultra trace amounts of arsenic(III) and arsenic(V) in tap water and total arsenic in biological samples by cloud point extraction and electrothermal atomic absorption spectrometry. , 2005, Talanta.

[11]  S. Sheppard,et al.  Derivation of ecotoxicity thresholds for uranium. , 2005, Journal of environmental radioactivity.

[12]  A. Favre-Réguillon,et al.  Selective Concentration of Uranium from Seawater by Nanofiltration , 2003 .

[13]  C. Stalikas.  Micelle-mediated extraction as a tool for separation and preconcentration in metal analysis , 2002 .

[14]  J. L. Pérez-Pavón,et al.  Surfactant cloud point extraction and preconcentration of organic compounds prior to chromatography and capillary electrophoresis. , 2000, Journal of chromatography. A.

[15]  C. Chou,et al.  A simple co-precipitation inductively coupled plasma mass spectrometric method for the determination of uranium in seawater , 2000, Fresenius' journal of analytical chemistry.

[16]  E. Paleologos,et al.  Micelle-mediated methodology for speciation of chromium by flame atomic absorption spectrometry , 2000 .

[17]  Robin D. Rogers,et al.  Aqueous Polymeric Solutions as Environmentally Benign Liquid/Liquid Extraction Media , 1999 .

[18]  Z. S. Ferrera,et al.  Determination of polychlorinated biphenyls by liquid chromatography following cloud-point extraction , 1998 .

[19]  D. Patterson,et al.  Quantification of polycyclic aromatic hydrocarbons and polychlorinated dibenzo-p-dioxins in human serum by combined micelle-mediated extraction (cloud-point extraction) and HPLC. , 1996, Analytical chemistry.

[20]  Komaromy-Hiller,et al.  Anisotropy Changes of a Fluorescent Probe during the Micellar Growth and Clouding of a Nonionic Detergent. , 1996, Journal of colloid and interface science.

[21]  J. P. Pavón,et al.  Cloud point preconcentration and flame atomic absorption spectrometry: application to the determination of cadmium , 1996 .

[22]  J. P. Pavón,et al.  Cloud point preconcentration and high-performance liquid chromatographic determination of organophosphorus pesticides with dual electrochemical detection , 1995 .

[23]  D C Kocher,et al.  Relationship between kidney burden and radiation dose from chronic ingestion of U: implications for radiation standards for the public. , 1989, Health physics.

[24]  C. Minero,et al.  Cloud point transition in nonionic micellar solutions , 1984 .

[25]  R. C. Merritt.  The extractive metallurgy of uranium , 2017 .