RadChem 2014

Session

Radionuclides in the Environment, Radioecology 3

RER-3

15 May 2014, 15:30

Casino Conference Centre

Conveners

Radionuclides in the Environment, Radioecology 3

• Eiliv Steinnes (Norwegian University of Science and Technology)
• LJUDMILA BENEDIK (Jožef Stefan Institute)

Description

(session dedicated to the memory of prof. Petr Beneš)

77. Radioactivity in mineral waters from Iberian Peninsula

Dr Fernando P. Carvalho (Instituto Superior Técnico/ LPSR)

15/05/2014, 15:30

Radionuclides in the Environment, Radioecology

Invited

Bottled mineral and spring waters in a total of 38 commercial brands from Portugal and Spain, all available from shelf in supermarkets, were analyzed for natural occurring radionuclides such as uranium and thorium isotopes, radium (226Ra), 210Pb, 210Po and tritium (3H). Radionuclide concentrations vary widely depending on the geological formation of the water source and the chemical...

85. A comparative study for the determination of uranium and uranium isotopes in granitic groundwater

Dr Min Hoon Baik (Korea Atomic Energy Research Institute)

15/05/2014, 16:00

Radionuclides in the Environment, Radioecology

Verbal

The determination of uranium and uranium isotopes in groundwater is very important in the context of the safety of the deep geological disposal of radioactive wastes. The effects of groundwater-rock interaction on the migration of radionuclides can be evaluated using naturally occurring radionuclides as analogues of radioactive waste disposal in a deep geological repository. In this study, the...

183. Applications of 137Cs and Pu isotopes in tracer studies

Dr Galina Lujaniene (SRI Center for Physical Sciences and Technology, Vilnius, Lithuania)

15/05/2014, 16:15

Radionuclides in the Environment, Radioecology

Verbal

This study was performed to assess activity concentrations of radionuclides and characteristic Pu activity and atom ratios in the atmosphere, soil, suspended particulate matter and bottom sediments with the aim of their possible application to trace the pollutants in the environment. Analyses of airborne radioactive aerosols were carried out in daily samples collected in Vilnius as well as in...

165. Influence of the redox state on the actinide sorption under highly alkaline conditions: batch sorption studies on titanium dioxide and calcium silicate hydrates

Dr Jan Tits (Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland)

15/05/2014, 16:30

Radionuclides in the Environment, Radioecology

Verbal

Cementitious materials are an important component in the multi-barrier concepts developed in many countries for the safe storage of low and intermediate level radioactive waste (L/ILW) in deep geological repositories. Reliable thermodynamic models able to predict the interaction between radionuclides and cementitious materials in the long term are important for the performance assessment of...

247. Determination of Sorption Characteristics of Artificial Radionuclides in the Hydrosphere

Mrs Eva Juranová (Department of Radioecology, T. G. Masaryk Water Research Institute, Public Research Institution; Faculty of Science, Institute for Environmental Studies, Charles University in Prague)

15/05/2014, 16:45

Radionuclides in the Environment, Radioecology

Verbal

Adsorption onto solid particles plays an important role in behaviour and transport of radioactive contaminants in hydrosphere. Sorption is usually described with distribution coefficient; a ratio of radioactivity fixed on solid phase and dissolved in water in equilibrium. In this study, distribution coefficients of sediment-water and suspended solids-water were determined using a method,...