Analytical method for the determination of gross beta, 90Sr, 226Ra and Pu isotopes in environmental samples

Kim, Hyuncheol; Lim, Jong-Myoung; Chung, Kun Ho; Lee, Wanno

doi:10.1007/s10967-017-5240-z

Cited by 3 publications

(1 citation statement)

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“…The extraction chromatography has significant advantages in the separation of trace actinides due to its selectivity of solvent extraction and the high efficiency of chromatography. Thanks to such advantages, different types of extraction chromatography materials have emerged, such as trioctylmethylammonium chloride (TEVA), dipentyl amyl phosphonate (UTEVA), and octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (TRU) extraction resin (produced by TrisKem), which have been widely used in the separation of transuranium elements since their inception [ 9 , 10 ]. Maxwell S et al used TEVA extraction resin to separate trace amounts of plutonium from uranium matrices, and then used diamide pod ether (DGA) resin for further purification, in which the decontamination factor of uranium in plutonium reached 1 × 10 6 [ 11 ].…”

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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Section: Introductionmentioning

confidence: 99%