Novel Extraction of Chromatographic Resins Based on Tetraalkyldiglycolamides: Characterization and Potential Applications

Horwitz, E. P.; McAlister, Daniel R.; Bond, A.; Barrans, Richard E.

doi:10.1081/sei-200049898

Cited by 359 publications

(231 citation statements)

References 21 publications

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“…This oxidation enhances retention of Pu on DGA Resin during very low nitric acid rinses which were used to optimize uranium removal. The retention of trivalent actinides such as Pu 3+ is still relatively high at low nitric acid concentrations (~50-100 k') on DGA Resin, but the k' for Pu 4+ is much higher (~1000 at 0.05M HNO 3 ) [12]. DGA Resin was rinsed with 20 ml 0.1M HNO 3 , followed by 10 ml 0.1M HNO 3 to remove residual uranium.…”

Section: Methodsmentioning

confidence: 99%

Rapid determination of 237Np and Pu isotopes in water by inductively-coupled plasma mass spectrometry and alpha spectrometry

Maxwell

Culligan

Jones

et al. 2010

J Radioanal Nucl Chem

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A new method that allows rapid preconcentration and separation of plutonium and neptunium in water samples was developed for the measurement of 237 Np and Pu isotopes by inductively-coupled plasma mass spectrometry (ICP-MS) and alpha spectrometry; a hybrid approach. 238 U can interfere with 239 Pu measurement by ICP-MS as 238 UH + mass overlap and 237 Np via peak tailing. The method provide enhanced removal of uranium by separating Pu and Np initially on TEVA Resin, then moving Pu to DGA resin for additional removal of uranium. The decontamination factor for uranium from Pu is almost 100,000 and the decontamination factor for U from Np is greater than 10,000. This method uses stacked extraction chromatography cartridges and vacuum box technology to facilitate rapid separations. Preconcentration is performed using a streamlined calcium phosphate precipitation method. Purified solutions are split between ICP-MS and alpha spectrometry so that long and short-lived Pu isotopes can be measured successfully. The method allows for simultaneous extraction of 20 samples (including QC samples) in 4 to 6 hours, and can also be used for emergency response. 239

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Section: Methodsmentioning

confidence: 99%

Rapid determination of 237Np and Pu isotopes in water by inductively-coupled plasma mass spectrometry and alpha spectrometry

Maxwell

Culligan

Jones

et al. 2010

J Radioanal Nucl Chem

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“…Strontium was counted using Čerenkov counting, while all actinide One of the separation methods tested was anion resin (AG-1X2) plus DGA Resin (Eichrom Technologies, Lyle, IL, USA). Am, Cm, and U were collected on DGA Resin, which has a k' of approximately 30,000 for Am (Horwitz et al, 2005). The sample was loaded in 3M nitric acid, and uranium was eluted in 0.25M nitric acid, prior to stripping Am and Cm with 0.2M HCL.…”

Section: Introductionmentioning

confidence: 99%

“…Tavčar et al (2005) reported a method to determine actinides in soil. Soil and sediment samples up to 10g were leached using strong nitric acid, filtration, evaporation, and the residue was redissolved in 1M HNO 3 . The valence adjustment was performed using hydroxylamine hydrochloride to reduce Pu to Pu +3 , followed by sodium nitrite to oxidize Pu to Pu +4 .…”

Section: Introductionmentioning

confidence: 99%

Rapid separation method for 237Np and Pu isotopes in large soil samples

Maxwell

Culligan

Noyes

2011

Applied Radiation and Isotopes

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A new rapid method for the determination of 237 Np and Pu isotopes in soil and sediment samples has been developed at the Savannah River Site Environmental Lab (Aiken, SC, USA) that can be used for large soil samples. The new soil method utilizes an acid leaching method, iron/titanium hydroxide precipitation, a lanthanum fluoride soil matrix removal step, and a rapid column separation process with TEVA Resin. The large soil matrix is removed easily and rapidly using this two simple precipitations with high chemical recoveries and effective removal of interferences. Vacuum box technology and rapid flow rates are used to reduce analytical time.

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“…[12][13][14] The ability of TODGA to extract many other metals has been discussed 15,16 and the very high extractive capacity of this agent was shown to allow its application as a solid extractant. 17 Complexation of trivalent lanthanides and actinides with several novel diglycolamide-functionalized calixarenes has been studied recently. [18][19][20] Besides, some of these functionalized calixarenes have been applied for the isolation of carrier-free 90 Y from 90 Sr. 21 The dicarbollylcobaltate anion 22 and some of its halogen derivatives have been employed often for the solvent extraction of various metal cations (e. g., Cs + , Sr 2+ , Ba 2+ , Eu 3+ , and Am 3+ ) from aqueous solutions into a polar organic phase, both under laboratory conditions for theoretical or analytical purposes, [23][24][25][26][27] and on the technological scale for the separation of some high-activity isotopes in the reprocessing of spent nuclear fuel and acidic radioactive waste.…”

Section: Introductionmentioning

confidence: 99%

N,N,N’,N’-Tetrabutyl-1,10-phenanthroline- 2,9-dicarboxamide as Very Effective Extraction Agent for Trivalent Europium and Americium

Makrlík

Vaňura

Selucký

et al. 2017

ACSi

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Solvent extraction of microamounts of Eu 3+ and Am 3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H + B -) and N,N,N',N'-tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide (L) N,N,N',N'-tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide) are extracted into the nitrobenzene phase. Extraction and stability constants of the cationic complex species in nitrobenzene saturated with water were determined and discussed. From the experimental results it is evident that this effective N,N,N',N'-tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide receptor for the Eu 3+ and Am 3+ cations could be considered as a potential extraction agent for nuclear waste treatment.

show abstract

Novel Extraction of Chromatographic Resins Based on Tetraalkyldiglycolamides: Characterization and Potential Applications

Cited by 359 publications

References 21 publications

Rapid determination of 237Np and Pu isotopes in water by inductively-coupled plasma mass spectrometry and alpha spectrometry

Rapid determination of 237Np and Pu isotopes in water by inductively-coupled plasma mass spectrometry and alpha spectrometry

Rapid separation method for 237Np and Pu isotopes in large soil samples

N,N,N’,N’-Tetrabutyl-1,10-phenanthroline- 2,9-dicarboxamide as Very Effective Extraction Agent for Trivalent Europium and Americium

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