Evaluation of a cesium adsorbent grafted with ammonium 12-molybdophosphate

Shibata, Takuya; Seko, Noriaki; Amada, Haruyo; Kasai, Noboru; Saiki, Seiichi; Hoshina, Hiroyuki; Ueki, Yuji

doi:10.1016/j.radphyschem.2015.10.026

Cited by 11 publications

(2 citation statements)

References 10 publications

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“…Next, to separate 127 Cs from sodium ions, we used fibrous Cs adsorbent, which was synthesized by radiation-induced graft polymerization to introduce ammonium 12-molybdophosphate (AMP) as an adsorption ligand onto a polyethylene trunk fabric. This material has been reported to adsorb Cs specifically 12 . We considered that this adsorbent is effective in purifying trace amounts of 127 Cs under the extreme condition in this study, where the Na + / 127 Cs ratio was 0.8 mmol/4.3 pmol (80 MBq), a 10 8 -fold molar number difference.…”

Section: Resultsmentioning

confidence: 99%

Non-invasive imaging of radiocesium dynamics in a living animal using a positron-emitting 127Cs tracer

Suzui

Shibata

Yin

et al. 2020

Sci Rep

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Visualizing the dynamics of cesium (Cs) is desirable to understand the impact of radiocesium when accidentally ingested or inhaled by humans. However, visualization of radiocesium in vivo is currently limited to plants. Herein, we describe a method for the production and purification of 127Cs and its use in visualizing Cs dynamics in a living animal. The positron-emitting nuclide 127Cs was produced using the 127I (α, 4n) 127Cs reaction, which was induced by irradiation of sodium iodide with a 4He2+ beam from a cyclotron. We excluded sodium ions by using a material that specifically adsorbs Cs as a purification column and successfully eluted 127Cs by flowing a solution of ammonium sulfate into the column. We injected the purified 127Cs tracer solution into living rats and the dynamics of Cs were visualized using positron emission tomography; the distributional images showed the same tendency as the results of previous studies using disruptive methods. Thus, this method is useful for the non-invasive investigation of radiocesium in a living animal.

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Section: Resultsmentioning

confidence: 99%

Non-invasive imaging of radiocesium dynamics in a living animal using a positron-emitting 127Cs tracer

Suzui

Shibata

Yin

et al. 2020

Sci Rep

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“…Furthermore, graft polymerization can be applied to various types of materials, such as films [ 45 ], fabrics [ 30 , 45 , 46 , 47 ], fibers [ 46 ], and particles [ 48 ]. Various adsorbents have been developed using this technology for the recovery and removal of metal ions from environmental water and industrial wastewater [ 46 , 47 , 48 , 49 , 50 , 51 ]. In the design of these adsorbents, it is important to select the most suitable functional groups based on the metal ion that needs to be adsorbed.…”

Section: Introductionmentioning

confidence: 99%

Chain Entanglement of 2-Ethylhexyl Hydrogen-2-Ethylhexylphosphonate into Methacrylate-Grafted Nonwoven Fabrics for Applications in Separation and Recovery of Dy (III) and Nd (III) from Aqueous Solution

et al. 2020

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A nonwoven fabric adsorbent loaded with 2-ethylhexyl hydrogen-2-ethylhexylphosphonate (EHEP) was developed for the separation and recovery of dysprosium (Dy) and neodymium (Nd) from an aqueous solution. The adsorbent was prepared by the radiation-induced graft polymerization of a methacrylate monomer with a long alkyl chain onto a nonwoven fabric and the subsequent loading of EHEP by hydrophobic interaction and chain entanglement between the alkyl chains. The adsorbent was evaluated by batch and column tests with a Dy (III) and Nd (III) aqueous solution. In the batch tests, the adsorbent showed high Dy (III) adsorptivity close to 25.0 mg/g but low Nd (III) adsorptivity below 1.0 mg/g, indicating that the adsorbent had high selective adsorption. In particular, the octadecyl methacrylate (OMA)-adsorbent showed adsorption stability in repeated tests. In the column tests, the OMA-adsorbent was also stable and showed high Dy (III) adsorptivity and high selectivity in repeated adsorption–elution circle tests. This result suggested that the OMA-adsorbent may be a promising adsorbent for the separation and recovery of Dy (III) and Nd (III) ions.

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A simple synthesis of magnetic ammonium 12-molybdophosphate/graphene oxide nanocomposites for rapid separation of Cs+ from water

Yang

Cui

et al. 2018

J Radioanal Nucl Chem

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Evaluation of a cesium adsorbent grafted with ammonium 12-molybdophosphate

Cited by 11 publications

References 10 publications

Non-invasive imaging of radiocesium dynamics in a living animal using a positron-emitting 127Cs tracer

Non-invasive imaging of radiocesium dynamics in a living animal using a positron-emitting 127Cs tracer

Chain Entanglement of 2-Ethylhexyl Hydrogen-2-Ethylhexylphosphonate into Methacrylate-Grafted Nonwoven Fabrics for Applications in Separation and Recovery of Dy (III) and Nd (III) from Aqueous Solution

A simple synthesis of magnetic ammonium 12-molybdophosphate/graphene oxide nanocomposites for rapid separation of Cs+ from water

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