| Autor: |
Turanov, A. N., Karandashev, V. K., Baulin, V. E., Baulin, D. V. |
| Předmět: |
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| Zdroj: |
Radiochemistry; Aug2023, Vol. 65 Issue 4, p404-410, 7p |
| Abstrakt: |
Extraction of U(VI), Th(IV), REE(III), and Sc(III) from nitrate and perchlorate solutions with solutions of phosphorylpodand 1,5-bis[di(p-tolyl)phosphoryl]-3-oxapentane (L) in 1,2-dichloroethane depending on the concentration of acids in the aqueous phase was studied. The stoichiometry of the extractable complexes was determined. The magnitude of the "perchlorate" effect was shown to diminish upon an increase in the acid concentration, and REE(III) ions, to be extracted by podand L from HClO4 solutions less efficiently than from HNO3 solutions at acid concentrations above 0.3 M. During the extraction of Sc(III) the "perchlorate" effect also manifests itself in the region of high acid concentration, which leads to an increase in the separation factors of Sc(III) and REE(III), U(VI), and Th(IV) during extraction with podand L from HClO4 solutions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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