Study of the Complexation of Protactinium(V) with EDTA

Masato Ishibashi; Shinsuke Komori; Daisuke Akiyama; Akira Kirishima

doi:10.1007/s10953-021-01126-y

Study of the Complexation of Protactinium(V) with EDTA

Masato Ishibashi, Shinsuke Komori, Daisuke Akiyama, Akira Kirishima

Center for Mineral Processing and Metallurgy (CMPM)

Research output: Contribution to journal › Article › peer-review

Abstract

The complex formation of protactinium(V) with ethylenediaminetetraacetic acid (EDTA) was studied at tracer concentration ([²³³Pa(V)] ~ 10⁻¹² mol·L⁻¹) by the solvent extraction technique at 25 °C, I = 1.0, and different acidities ([HClO₄] = 1.0, 0.1, 0.025 mol·L⁻¹). The aqueous phase employed for the solvent extraction experiment was Pa(V)/H₂O/HClO₄/NaClO₄/EDTA at 25 °C for I = 1.0, and the organic phase was xylene with a chelating agent, thenoyltrifluoroacetone (TTA). A 1:1 complex between Pa(V) and EDTA was identified using solvent extraction experiments. The obtained complex formation constant of PaO(OH)(EDTA)²⁻ was large, and the Pa(V)–EDTA complex was stable.

Original language	English
Pages (from-to)	1432-1442
Number of pages	11
Journal	Journal of Solution Chemistry
Volume	50
Issue number	11-12
DOIs	https://doi.org/10.1007/s10953-021-01126-y
Publication status	Published - 2021 Dec

Keywords

Complex
EDTA
Protactinium(V)
Solvent extraction

ASJC Scopus subject areas

Biophysics
Biochemistry
Molecular Biology
Physical and Theoretical Chemistry

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10.1007/s10953-021-01126-y

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title = "Study of the Complexation of Protactinium(V) with EDTA",

abstract = "The complex formation of protactinium(V) with ethylenediaminetetraacetic acid (EDTA) was studied at tracer concentration ([233Pa(V)] ~ 10−12 mol·L−1) by the solvent extraction technique at 25 °C, I = 1.0, and different acidities ([HClO4] = 1.0, 0.1, 0.025 mol·L−1). The aqueous phase employed for the solvent extraction experiment was Pa(V)/H2O/HClO4/NaClO4/EDTA at 25 °C for I = 1.0, and the organic phase was xylene with a chelating agent, thenoyltrifluoroacetone (TTA). A 1:1 complex between Pa(V) and EDTA was identified using solvent extraction experiments. The obtained complex formation constant of PaO(OH)(EDTA)2− was large, and the Pa(V)–EDTA complex was stable.",

keywords = "Complex, EDTA, Protactinium(V), Solvent extraction",

author = "Masato Ishibashi and Shinsuke Komori and Daisuke Akiyama and Akira Kirishima",

note = "Funding Information: This work was supported by JSPS KAKENHI (Grant Number 15H04239). A part of this work was performed under the Research Program for CORE lab of “Dynamic Alliance for Open Innovation Bridging Human, Environment, and Materials” in “Network Joint Research Center for Materials and Devices.” Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2021",

month = dec,

doi = "10.1007/s10953-021-01126-y",

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AU - Komori, Shinsuke

AU - Akiyama, Daisuke

AU - Kirishima, Akira

N1 - Funding Information: This work was supported by JSPS KAKENHI (Grant Number 15H04239). A part of this work was performed under the Research Program for CORE lab of “Dynamic Alliance for Open Innovation Bridging Human, Environment, and Materials” in “Network Joint Research Center for Materials and Devices.” Publisher Copyright: © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

PY - 2021/12

Y1 - 2021/12

N2 - The complex formation of protactinium(V) with ethylenediaminetetraacetic acid (EDTA) was studied at tracer concentration ([233Pa(V)] ~ 10−12 mol·L−1) by the solvent extraction technique at 25 °C, I = 1.0, and different acidities ([HClO4] = 1.0, 0.1, 0.025 mol·L−1). The aqueous phase employed for the solvent extraction experiment was Pa(V)/H2O/HClO4/NaClO4/EDTA at 25 °C for I = 1.0, and the organic phase was xylene with a chelating agent, thenoyltrifluoroacetone (TTA). A 1:1 complex between Pa(V) and EDTA was identified using solvent extraction experiments. The obtained complex formation constant of PaO(OH)(EDTA)2− was large, and the Pa(V)–EDTA complex was stable.

AB - The complex formation of protactinium(V) with ethylenediaminetetraacetic acid (EDTA) was studied at tracer concentration ([233Pa(V)] ~ 10−12 mol·L−1) by the solvent extraction technique at 25 °C, I = 1.0, and different acidities ([HClO4] = 1.0, 0.1, 0.025 mol·L−1). The aqueous phase employed for the solvent extraction experiment was Pa(V)/H2O/HClO4/NaClO4/EDTA at 25 °C for I = 1.0, and the organic phase was xylene with a chelating agent, thenoyltrifluoroacetone (TTA). A 1:1 complex between Pa(V) and EDTA was identified using solvent extraction experiments. The obtained complex formation constant of PaO(OH)(EDTA)2− was large, and the Pa(V)–EDTA complex was stable.

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KW - Protactinium(V)

KW - Solvent extraction

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Study of the Complexation of Protactinium(V) with EDTA

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