40èmes Journées des Actinides & 2nd Workshop on Actinide Targets

Session

Chemistry I

28 Mar 2010, 14:00

503/1-001 - Council Chamber (CERN)

9. Investigation of uranium-colloid interactions in soil by dual Capillary Electrophoresis / Field-Flow Fractionation hyphenated with Inductively Coupled Plasma-Mass Spectrometry.

Mrs Céline Claveranne-Lamolère (IPREM/LCABIE and CEA-DAM-DIF)

28/03/2010, 14:20

Nuclear fuel cycle, environment

oral

Uranium is an actinide which naturally occurs in the environment. Its applications (civilian nuclear industry, agriculture, military applications, etc…) have induced an anthropogenic contamination, particularly in soils. So it is essential to know conditions and understand mechanisms of its transport. According to IUPAC, colloids refer to molecules or polymolecular particles which have in one...

35. Uranyl behaviour at the gibbsite-water interface: a Car Parrinello molecular dynamics study

Mr Sébastien Lectez (CNRS)

28/03/2010, 14:40

Nuclear fuel cycle, environment

oral

In order to understand the various mechanisms involved in the retention of the radionuclides on mineral surfaces, molecular simulations appear as a complementary tool to experiments. In this work, we propose to study the sorption of the solvated uranyl cation UO22+ on an abundant mineral surface, the gibbsite (Al(OH)3. The study of such complex systems may involve finite temperature...

2. The Features of Luminol Chemiluminescence in Detection of Trace Amounts of Actinides in Solutions

Igor Izosimov (Khlopin Radium Institute)

28/03/2010, 15:00

Nuclear fuel cycle, environment

oral

A widespread application of tunable lasers to analytical problems gave impetus to development of new procedures for detection of trace amounts of a substance in various media. A capability to vary the wavelength of laser radiation allows selective action on atoms and molecules and also their selective detection. From the practical standpoint, liquids are the most suitable for analysis since...