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Hydrolysis of protactinium(V). I. Equilibrium constants at 25 degrees C: A solvent extraction study with TTA in the aqueous system Pa(V)/H2O/H+/Na+/ClO4-

Abstract : The hydrolysis of protactinium(V) was studied at tracer scale (ca. 10(-12) M) with the solvent extraction method involving the aqueous system: Pa(V)/H2O/H+/Na+/ClO4- at 25.0degreesC for three values of ionic strength. Extraction experiments were conducted using the chelating agent thenoyltrifluoroacetone (TTA) in toluene. Hydrolysis constants are reported for each ionic strength investigated. An SIT modeling is presented and extrapolated constants to zero ionic strength are derived, as well as interaction coefficients of the two hydrolyzed species involved.
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http://hal.in2p3.fr/in2p3-00011964
Contributor : Suzanne Robert Connect in order to contact the contributor
Submitted on : Tuesday, October 15, 2002 - 11:26:12 AM
Last modification on : Thursday, November 19, 2020 - 8:06:01 AM

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  • HAL Id : in2p3-00011964, version 1

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D. Trubert, C. Le Naour, C. Jaussaud. Hydrolysis of protactinium(V). I. Equilibrium constants at 25 degrees C: A solvent extraction study with TTA in the aqueous system Pa(V)/H2O/H+/Na+/ClO4-. Journal of Solution Chemistry, Springer Verlag (Germany), 2002, 31, pp.261-277. ⟨in2p3-00011964⟩

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