Establishment and Validation of an Analytical Technique for Quantification of Trace Metallic Elements in Uranium-Zirconium Fuel Ingot Employing Time of Flight-based ICP-MS

Saha, Abhijit; Saxena, Manoj

doi:10.46770/as.2013.04.003

Cited by 9 publications

(2 citation statements)

References 24 publications

(27 reference statements)

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“…The ICP-QMS operating parameters are given in Table T1 ( †ESI). 21 The isobaric interferences on various lanthanides were corrected by using the equations reported from our laboratory. 22 The detection limit of 232 Th by ICP-QMS was found to be 5 ng L −1 .…”

Section: Methodsmentioning

confidence: 99%

“…The distribution ratio (D) and decontamination factor (α) values were calculated by determining the concentration of concerned metal ions in the initial and equilibrated solutions by an inductively coupled plasma quadrupole mass spectrometer (ICP-QMS, VG PlasmaQuad PQ2 Turbo Plus). The ICP-QMS operating parameters are given in Table T1 (†ESI) . The isobaric interferences on various lanthanides were corrected by using the equations reported from our laboratory .…”

Section: Methodsmentioning

confidence: 99%

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Selective Extraction of Thorium(IV) from Uranium and Rare Earth Elements Using Tetraphenylethane-1,2-diylbis(phosphoramidate)

et al. 2023

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Tetraphenylethane-1,2-diylbis(phosphoramidate) in conjugation with a room temperature ionic liquid in chloroform medium is reported for the first time in the liquid–liquid extraction of thorium (Th). The extracted Th(IV) is collected as a white solid in the organic medium, thereby facilitating its easy separation. A high distribution ratio (D) of (12.4 ± 0.1) × 103 in 2–8 mol L–1 acidity range and high decontamination factors (α) of Th(IV) from uranium, lanthanides, and a number of transition elements makes this extraction process versatile and selective. A number of experimental investigations in synergism with extended X-ray absorption fine structure (EXAFS) spectroscopy and density functional theory (DFT) studies are interpreted to confirm the structure of the chelated complex. A 1:2 metal/ligand complex in which the two oxygen and two nitrogen atoms of each bis(phosphoramidate) molecule satisfying the eight coordination sites of Th(IV) is found to be formed. The extracted white solid thorium complex is easily converted to ThO2 after washing and heating at 1300 °C under O2 atmosphere. This work is expected to find direct application in the thorium fuel cycle, especially in the mining process of thorium from its ores and in the separation of fissile 233U from fertile 232Th in irradiated fuel.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Selective Extraction of Thorium(IV) from Uranium and Rare Earth Elements Using Tetraphenylethane-1,2-diylbis(phosphoramidate)

et al. 2023

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Selective Liquid‐Liquid Extraction of Uranium by Phosphoramidate‐Group Bearing Ionic Liquid

et al. 2019

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Extraction of pure uranium (U) from its ore or spent nuclear fuel and separation of U for trace impurities characterization of nuclear fuels are the processes resulting into the accumulation of large amounts of low boiling and volatile organic waste. The limited reusability and degradation (chemical and radiation induced) of these waste solutions turning out to be an environmental threat. The authors have addressed this issue by developing an eco-friendly, simple and selective liquid-liquid extraction (LLE) procedure for U employing a phosphoramidate group bearing task specific ionic liquid (TSIL). Optimization of various LLE parameters resulted in high distribution ratio (D) value of 174 � 5 for U when extracted from 5 mol L À 1 HNO 3 medium. A detailed study on the infrared and extended X-ray absorption fine structure spectroscopy of U loaded ionic liquid phase reveals the extraction mechanism. Such high D U value resulted in high separation factors for U with respect to the elements which are commonly present in the ore, processed nuclear fuel and spent nuclear fuel. The structural integrity and metal ion extractability of the TSIL is found to remain unaffected when irradiated up to an absorbed dose of 400 kilogray (kGy). Sodium carbonate solution is found to backextract � 95% of U from the ionic liquid phase and regenerate it for further usage.persuing research in this field and we are further working on these directions. Supporting Information SummaryAll the information regarding instruments, optimized instrumental parameters, reagents, solutions and the extraction procedure have been provided in supporting information.

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Determination of trace rare earth elements in gadolinium aluminate by inductively coupled plasma time of flight mass spectrometry

Saha

Deb

Nagar

et al. 2014

Spectrochimica Acta Part B: Atomic Spectroscopy

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Establishment and Validation of an Analytical Technique for Quantification of Trace Metallic Elements in Uranium-Zirconium Fuel Ingot Employing Time of Flight-based ICP-MS

Cited by 9 publications

References 24 publications

Selective Extraction of Thorium(IV) from Uranium and Rare Earth Elements Using Tetraphenylethane-1,2-diylbis(phosphoramidate)

Selective Extraction of Thorium(IV) from Uranium and Rare Earth Elements Using Tetraphenylethane-1,2-diylbis(phosphoramidate)

Selective Liquid‐Liquid Extraction of Uranium by Phosphoramidate‐Group Bearing Ionic Liquid

Determination of trace rare earth elements in gadolinium aluminate by inductively coupled plasma time of flight mass spectrometry

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