Separation and preconcentration of uranium from geological materials with chelating resin containing 4-(2-thiazolylazo)resorcinol functional groups

Lee, Chang Heon; Suh, Moo Yul; Kim, Jung Suk; Kim, Do Yang; Eom, Tae Yoon

doi:10.1016/s0003-2670(98)00794-6

Cited by 26 publications

(5 citation statements)

References 14 publications

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“…It is well known that even though ICP can well be exploited to determine both major and minor constituents in a variety of samples, in complex matrices rich in emission spectrum (such as uranium, thorium and plutonium), a prior separation of the major matrix is a pre-requisite for overcoming spectral interferences [5,[11][12][13]. Methods for the determination of other common metallic elements such as B, Cd, Co, Cr, Mn, Ni and rare earths in plutonium/uranium after chemical separation are already reported in the literature [5][6][7][8] and hence are not discussed here.…”

Section: Resultsmentioning

confidence: 99%

“…Of these, ICP-AES has been widely selected as the technique of choice to perform the analysis of metallic constituents owing to its simultaneous measurement capability, wide dynamic analytical range, high sensitivity and relative freedom from matrix interferences [3,4]. A number of studies have been reported on the application of ICP-AES to the determination of the trace or minor metal constituents in nuclear materials such as uranium, plutonium, oxides/carbides of uranium and plutonium, high-level radioactive waste glass and simulated nuclear waste solutions after the prior chemical separation of the major matrix [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…However, direct analysis of U-Pu bearing materials is not possible for trace metals, because severe spectral interferences are found in intensely complex atomic emission spectra of uranium and plutonium [11,13,14]. On the other hand, the need to keep a spread of alpha emitting transuranous elements such as Pu, Np, Am and Cm within a glove box, interfaced to an ICP spectrometer to a minimum and to minimize the radiation hazard during analysis has been considerably emphasized for radiation safety [11,15].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the need to keep a spread of alpha emitting transuranous elements such as Pu, Np, Am and Cm within a glove box, interfaced to an ICP spectrometer to a minimum and to minimize the radiation hazard during analysis has been considerably emphasized for radiation safety [11,15]. Therefore, an adequate pre-separation procedure has been required in advance of the ICP-AES analysis.…”

Section: Introductionmentioning

confidence: 99%

“…Of course, chromatographic separation technique may score over solvent extraction in terms of their simplicity in handling the radioactive materials, small sample size and equipments. Analysis of fission products in nuclear fuels have been reported [11,16] after chromatographic separation followed by ICP-AES. Huff and Bowers [17] used AGMP-1 to separate the plutonium matrix prior to the determination of 32 elements by ICP-AES using a photomultiplier-based sequential spectrometer.…”

Section: Introductionmentioning

confidence: 99%

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Determination of In and Ga in plutonium oxide matrix by ICP-AES after chemical separation

et al. 2011

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An analytical method was developed for the determination of indium and gallium in plutonium samples. A solvent extraction technique was employed by using 30% TBP in CCl 4 for the quantitative separation of plutonium from the sample solution and subsequent determination by radial inductively coupled plasma atomic emission spectrometry (ICP-AES). The quantitative recovery of In and Ga in the separated samples was confirmed from radiometric/tracer studies. Recording of spectral profile at 303.396 nm for In and 403.298 nm for Ga has clearly indicated that the determination of Ga and In at lower concentrations will be affected by the presence of significant amounts of residual Pu in the aqueous phase due to spectral interference. These elements can be determined from ppm to % levels by proper dilution with 1 M HNO 3 and appropriate (100 mg and 1 g) sample size. The analytical range obtained for Ga and In was 0.1-1000 µg/mL and 0.05-500 µg/mL respectively by ICP-AES. Synthetic samples of plutonium containing indium and gallium in the range of 50-20 000 ppm were analyzed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Determination of In and Ga in plutonium oxide matrix by ICP-AES after chemical separation

et al. 2011

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Solid-phase extraction–spectrophotometric determination of uranium(VI) in natural waters

2003

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A method for the extraction and determination of uranyl ion in natural waters using octadecyl bonded silica membrane disks modified with piroxicam and spectrophotometry with arsenazo(III) is proposed. The perconcentration step was studied with regard to experimental parameters such as amount of extractant, type and amount of eluent, pH, flow rates and tolerance limit of diverse ions on the recovery of uranyl ion. The limit of detection of the proposed method is 0.4 micro g L(-1) of uranyl. The method was applied to the recovery of uranyl from different water samples.

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Characterization of the sorption of uranium(VI) on different complexing resins

Pesavento

Biesuz

Alberti

et al. 2003

Analytical and Bioanalytical Chemistry

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The sorption of uranium(VI) on two cationic resins containing different complexing groups, the iminodiacetic resin Chelex 100 and the weak carboxylic resin Amberlite CG-50, was investigated. The Gibbs-Donnan model was used to describe and to predict the sorption through the determination of the intrinsic complexation constants. These quantities, even though non-thermodynamic, characterize the sorption as being independent of experimental conditions. The sorption mechanism of the metal on the complexing resins was also studied by adding a competitive soluble ligand that shifts the sorption curves to higher pH values. The ligand competes with the resin for the complexation with the metal ion. Uranium is also strongly sorbed on Chelex 100 at very acid pH, through formation of two complexes in the resin phase: ML with log beta(110i)=-1.16, in more acidic solution, and ML(2 )with log beta(120i)=-5.72. Only the presence of the competitive ligand in solution makes the determination of the second complex possible. Also on Amberlite CG-50 the sorption is strong and involves the formation of the complex ML(2), in more acidic solution, with log beta(120i)=-3.16. In the presence of the ligand EDTA, the complex ML(2)(OH)(2 )was characterized with log beta(12-2i)=-5.15. In all the experiments the hydrolysis reaction in the aqueous phase was quantitatively considered.

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Separation and preconcentration of uranium from geological materials with chelating resin containing 4-(2-thiazolylazo)resorcinol functional groups

Cited by 26 publications

References 14 publications

Determination of In and Ga in plutonium oxide matrix by ICP-AES after chemical separation

Determination of In and Ga in plutonium oxide matrix by ICP-AES after chemical separation

Solid-phase extraction–spectrophotometric determination of uranium(VI) in natural waters

Characterization of the sorption of uranium(VI) on different complexing resins

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