Influence of ethylenediaminetetraacetic acid on the long-term oxidation state distribution of plutonium

Spectrophotometry was used to study the effect of EDTA on plutonium oxidation state distribution as a function of time, pH, and ligand-to-metal ratio (L/M) under anoxic conditions. Novel Pu(V)-EDTA absorption bands were identified at 571, 993, 1105, and 1150 nm with molar absorption coefficients of...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2021-07, Vol.274, p.129741-129741, Article 129741
Main Authors: DiBlasi, Nicole A., Yalçintas, Ezgi, Stanley, Floyd E., Reed, Donald T., Hixon, Amy E.
Format: Article
Language:English
Subjects:
Edetic Acid
EDTA
inorganic and physical chemistry
Oxidation-Reduction
Plutonium
Plutonium - analysis
RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
Radioactive waste disposal
Redox
Solubility
Water Pollutants, Radioactive - analysis
WIPP
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Summary:Spectrophotometry was used to study the effect of EDTA on plutonium oxidation state distribution as a function of time, pH, and ligand-to-metal ratio (L/M) under anoxic conditions. Novel Pu(V)-EDTA absorption bands were identified at 571, 993, 1105, and 1150 nm with molar absorption coefficients of 15 ± 1, 6 ± 1, 10 ± 1, and 10 ± 1 cm−1M−1, respectively. Pu(V)-EDTA spectral changes occurred at L/M 
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2021.129741