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Items for "Eu(III)"

Experimental evidence for the influence of the excitation wavelength on the value of the equilibrium constant as determined by Time-Resolved Emission Spectroscopy (TRES)

In the case of a rapid photochemical process, a new theoretical result relating time-resolved emission spectroscopy data to three physical parameters of the chemical system has been recently proposed...

Keywords: Fluorescence, Eu(III), Cm(III), Photochemistry, Equilibrium constant

05/2006 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Determination of the thermodynamic quantities of complexation between Eu(III) and carboxylic acids by microcalorimetry

Potentiometric and microcalorimetric titration techniques were applied to determine the Gibbs free energies and enthalpies of the protonation of some carboxylic acids (acetic, glycolic, malonic and malic acids) and their complexation with Eu(III) in 1.0 M NaClO₄ solution at 25 °C, where Eu(III) was used as a chemical analogue of radiologically important Am(III)...

Keywords: Calorimetry, Eu(III), Organic acid, Complex formation, Entropy

09/2006 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Adsorption and kinetic desorption study of ^152+154Eu(III) on multiwall carbon nanotubes from aqueous solution by using chelating resin and XPS methods

Multiwall carbon nanotubes (MWCNTs) have been pretreated with HNO₃ and used for the adsorption of radionuclide ^152+154Eu(III) from aqueous solutions...

Keywords: Carbon nanotubes, Eu(III), Adsorption, XPS, Kinetic desorption

01/2008 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag

TRLFS and EXAFS investigations of lanthanide and actinide complexation by triflate and perchlorate in an ionic liquid

The solvation of the Eu-perchlorate (ClO₄^–) and triflate (CF₃SO₃^–, OTf^–) salts as well as of Cm(ClO₄)₃ and Am(ClO₄)₃ in the ionic liquid C₄mimTf₂N (1-butyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide) has been comparatively investigated by application of laser fluorescence spectroscopy and X-ray absorption spectroscopy...

Keywords: Ionic Liquids, Lanthanides, Actinides, Eu(III), Cm(III)