RadChem 2018

Session

SEP 2

SEP.2

15 May 2018, 10:30

Casino Conference Centre

Conveners

SEP 2

• Pavol Rajec (BIONT a.s.)
• Petra Panak (J.)

521. Interaction of human serum albumin with Cm(III) using time-resolved laser fluorescence spectroscopy (TRLFS) and NMR

Dr Nicole Adam (Institut for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT))

15/05/2018, 10:30

Separation Methods, Speciation

Invited

Radionuclides, in particular actinides, can cause a serious health risk upon incorporation. Regarding the development of potential decontamination therapies, a detailed understanding of the different biochemical reactions of incorporated actinides is highly required. In the human body, actinides preferentially interact with blood serum components. One representative of utmost importance is...

737. Uranyl – Carbonate – Ca(2+)/Mg(2+) aqueous system spectroscopic experimental and theoretical study - Molecular modelling meets environmental protection

Mr Jakub Višňák (Czech Technical University)

15/05/2018, 11:00

Separation Methods, Speciation

Verbal

Aside to pure Physical Chemistry interest, determining uranium speciation is important for environmental monitoring or within experimental studies for possible remediation protocols (and possible application for prospection and extraction is of interest as well). Natural water samples dominated by system UO$_2{}^{2+}$ - CO$_3^{2-}$ - Ca$^{2+}$/Mg$^{2+}$ - H$_2$O have been chosen in this study....

738. Speciation and luminescence properties of Eu(III) and U(VI) in solutions using complexing agents

Mr Ivan Hupka (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)

15/05/2018, 11:15

Separation Methods, Speciation

Verbal

Time-resolved laser-induced fluorescence spectroscopy is fast, easy and accurate optical method for low concentration determination and spectral characteristics of rare earth elements (e.g. Eu) and actinides (mainly U, Cm, Am) based on their luminescence properties.

Having Nd:YAG crystal as a laser source (emission wavelength 1064 nm) with the repetition frequency 10 Hz and Optical Parametric...

494. Structure and thermodynamics of the complexes of neptunium (V) with dicarboxylates in aqueous solution

Mr Martin M. Maiwald (Ruprecht-Karls Universität Heidelberg)

15/05/2018, 11:30

Separation Methods, Speciation

Verbal

Introduction
The complexation of actinides with different organic ligands is an important topic in terms of nuclear waste disposal. Depending on the host rock these molecules are either naturally occurring organic compounds as in pore waters of clay rock formations (e.g. acetate, lactate) or model compounds (e.g. oxalate, malonate, succinate) of organic macromolecules (polycarboxylate...

459. Complexation of protactinium(V) with nitrilotriacetic acid

Ms Coralie LUCHINI (CNRS-IN2P3/CEA)

15/05/2018, 11:45

Separation Methods, Speciation

Verbal

Protactinium, as a $^{235}U$ decay product, is naturally present in the environment as $^{231}Pa$ isotope (alpha emitter with a half-life of 32,400 years). Over the years, this isotope is accumulated in uranium tailings and stocks of yellow cake. Modelling the behavior of this element in the geosphere requires thermodynamic and structural data relevant to environmental conditions. The present...