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Journal Articles

Highly practical and simple ligand for separation of Am(III) and Eu(III) from highly acidic media

Suzuki, Hideya; Tsubata, Yasuhiro; Kurosawa, Tatsuya; Shibata, Mitsunobu; Kawasaki, Tomohiro; Urabe, Shunichi*; Matsumura, Tatsuro

Analytical Sciences, 32(4), p.477 - 479, 2016/04

https://doi.org/10.2116/analsci.32.477

Times Cited Count：24 Percentile：68.22(Chemistry, Analytical)

An impeccable, high-performance new reagent called alkyl diamide amine (ADAAM) was examined from the viewpoint of mutual separation of Am(III) and Eu(III). ADAAM has three donor atoms, one soft N-donor atom and two hard O-donor atoms, in the central frame. The combination of soft and hard atoms affords a tridentate donor set of atoms that ensures remarkable extractability and selectivity of Am(III) and Eu(III) in highly acidic media.

Journal Articles

Interaction of Eu(III) ion and non-porous silica; Irreversible sorption of Eu(III) on silica and hydrolysis of silica promoted by Eu(III)

Takahashi, Yoshio*; Murata, Miho*; Kimura, Takaumi

Journal of Alloys and Compounds, 408-412, p.1246 - 1251, 2006/02

https://doi.org/10.1016/j.jallcom.2005.04.120

Times Cited Count：24 Percentile：75.19(Chemistry, Physical)

no abstracts in English

Journal Articles

Eu(III) adsorption by in the presence of organic ligands

Yoshida, Takahiro; Suzuki, Yoshinori*; Ozaki, Takuo; Onuki, Toshihiko; Francis, A. J.*

Proceedings of International Symposium on Radioecology and Environmental Dosimetry, p.296 - 300, 2004/03

The effects of organic ligands (citric acid, desferrioxamine B (DFO) and ethylenediaminetetraacetic acid (EDTA)) on Eu(III) adsorption by an aerobic bacterium were investigated. After incubation of with 2 M Eu(III) without organic ligands in a 0.1 M NaCl solution containing 3.9 mg $_{dry weight}$ /L biomass for 1 hour, over 90% Eu(III) was adsorbed on the bacterial cells at pH 4 - 7. Eu(III) adsorption by bacterial cells was depleted at pH 4 - 7 when equimolar EDTA was present, while citric acid and DFO showed less effect on the depletion of Eu(III) adsorption. X-ray photoelectron spectroscopy (XPS) indicated that the adsorbed Eu(III) on cells was covalently bound to carboxyl and/or hydroxyl functional groups of the cell surface. These results suggest that carboxyl and/or hydroxyl functional groups of cell surface show a higher affinity with Eu(III) than citric acid and DFO and have the potential to prevent migration of Eu-organic ligands complexes with low stability constants in environments.