Sequential determination of Pu and Am radioisotopes in environmental samples; a comparison of two separation procedures

Rozle, Jakopic; Tavčar, Polona; Benedik, Ljudmila

doi:10.1016/j.apradiso.2006.12.005

Cited by 40 publications

(9 citation statements)

References 13 publications

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“…1 Though solvent extraction, 2 precipitation, 3 and ion-exchange 4 based separation methods are also used, SPE methods are of relevance due to their ease of operation, high separation efficiency, low extractant inventory, etc. 5 In view of these, a large number of commercially available SPE-based columns such as SREX, 6 TRU, 6 UTEVA, 7 TEVA, 8 etc. are finding applications in laboratory separation studies involving actinides and fission products.…”

Section: ■ Introductionmentioning

confidence: 99%

Highly Efficient Extraction Chromatography Resins Containing Dendrimers with DGA Groups in Ionic Liquid for Actinide Uptake

Gujar

Ansari

Verboom

et al. 2018

Ind. Eng. Chem. Res.

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Diglycolamide (DGA)-functionalized poly(propyleneimine) diaminobutane dendrimers of the first (DGA-Den-I) or second (DGA-Den-II) generation and a room temperature ionic liquid (RTIL), viz., 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide, based extraction chromatography resins were prepared for minor actinide separations from high level radioactive waste. The weight distribution coefficients (K d) of actinides on the two resins gave excellent and selective sorption of Am(III) and Pu(IV) over hexavalent uranyl ions, Sr(II) and Cs(I), over a wide range of acidity (0.01–6 M HNO3). The sorbed Am(III) and Pu(IV) could be efficiently desorbed with a buffered complexing solution of 1 M guanidine carbonate + 0.05 M EDTA. The sorption of metal ions on both the resins followed pseudo-second order rate kinetics and proceeded via a chemisorption phenomenon with a sorption energy of 13.4 ± 0.2 kJ/mol. The resin capacities were estimated to be 4.64 ± 0.18 and 4.19 ± 0.21 mg of Eu per g of DGA-Den-I and DGA-Den-II resins, respectively. The column loading of Eu(III) was about 85% of the theoretical value with a narrow elution profile using a buffered complexing solution. The resin affinity toward U(VI), Sr(II), and Cs(I) cations over Am(III) and Pu(IV) was poor, indicating the possible use of the resins for selective separation of Am(III) and Pu(IV) from other metal ions over a wide range of feed acidity.

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Section: ■ Introductionmentioning

confidence: 99%

Highly Efficient Extraction Chromatography Resins Containing Dendrimers with DGA Groups in Ionic Liquid for Actinide Uptake

Gujar

Ansari

Verboom

et al. 2018

Ind. Eng. Chem. Res.

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“…For the purification steps small DGA extraction chromatographic columns (containing 150 mg resin) are used and in all cases the purified fractions are measured directly by ICP-MS but if necessary (e.g. if the concentration of the measurand is low) the aliquot can be evaporated to dryness and taken up in 1.5-2 mL 1% HNO 3 .…”

Section: Sample Splitting and Source Preparation For Alpha Spectrometmentioning

confidence: 99%

“…For the sequential separation of the actinides the combination of two [2][3][4][5][6][7][8][9] or more extraction chromatographic and/or ion exchange columns [10][11][12][13][14][15] is the most commonly applied solution for the analysis of different matrices, e.g. water [11], soil and sediment [2-5, 9, 12, 14], urine [8,13], radioactive wastes [4] and safeguards swipe samples [10,16] using alpha spectrometry and/or ICP-MS.…”

Section: Introductionmentioning

confidence: 99%

Improved radioanalytical method for the simultaneous determination of Th, U, Np, Pu and Am(Cm) on a single TRU column by alpha spectrometry and ICP-MS

Macsik¹,

Groska²,

Vajda³

et al. 2013

Radiochimica Acta

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Actinides / ICP-MS / alpha spectrometry / TRU resin Summary.A radioanalytical method based on the use of a single TRU extraction chromatographic column and selective, on-column oxidation state adjustment of actinides was developed for the determination of Th, U, Np, Pu and Am(Cm) in environmental samples (such as sediment and swipe samples). The procedure of Vajda et al.[1] was further investigated and optimized focusing on the separation of Th, U and Np. The improved method combines two measurement techniques -alpha spectrometry and inductively coupled plasma mass spectrometry (ICP-MS) -which allows to obtain more reliable information on a wider range of isotopes: 228 Th,

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“…Due to the advantages of simple equipment, easy control, and high separation efficiency, the ion exchange method has become one of the most commonly used separation techniques. As early as the 1950s, American scientists carried out anion exchange technology to separate plutonium in reprocessing [ 5 , 6 , 7 ]. The ion exchange resin used in the ion exchange method has the advantages of stable chemical properties and large exchange capacity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Silica-Based Quaternized Adsorption Material and Study on Its Adsorption Behavior for Pu(IV)

Wang¹,

Liu²,

Chang³

et al. 2022

Molecules

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In this research, we explored the synthesis optimization of the silica-based quaternized adsorption material (SG-VTS-VPQ) and its adsorption behavior for Pu(IV). By optimizing the synthesis process, the grafting amount of 4-vinylpyridine reached 1.25 mmol·g−1. According to the analysis of NMR and XPS, the quaternization rate of pyridine groups reached 91.13%. In the adsorption experiments, the thermodynamic experiment results show that the adsorption of Pu(IV) by SG-VTS-VPQ is more in line with the Langmuir adsorption model and the adsorption type is a typical chemical adsorption; the kinetic results show that adsorption process is more in line with the pseudo first-order kinetic model, and the larger specific surface area of SG-VTS-VPQ plays an important role in the adsorption. The results of the adsorption mechanism show that the adsorption of Pu(IV) by SG-VTS-VPQ is mainly complex anion Pu(NO3)62− and Pu(NO3)5−. This research provides in-depth and detailed ideas for the surface modification and application of porous silica gel, and at the same time provides a new way to develop the direction of the analysis of pretreatment materials in the spent fuel reprocessing field.

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Sequential determination of Pu and Am radioisotopes in environmental samples; a comparison of two separation procedures

Cited by 40 publications

References 13 publications

Highly Efficient Extraction Chromatography Resins Containing Dendrimers with DGA Groups in Ionic Liquid for Actinide Uptake

Highly Efficient Extraction Chromatography Resins Containing Dendrimers with DGA Groups in Ionic Liquid for Actinide Uptake

Improved radioanalytical method for the simultaneous determination of Th, U, Np, Pu and Am(Cm) on a single TRU column by alpha spectrometry and ICP-MS

Synthesis of Silica-Based Quaternized Adsorption Material and Study on Its Adsorption Behavior for Pu(IV)

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