RadChem 2018

Session

RER 6

RER.6

18 May 2018, 13:30

Casino Conference Centre

Conveners

RER 6

• Michal Fejgl (National Radiation Protection Institute)
• Pavel P. Povinec (Comenius University, Bratislava, Slovakia)

531. U(VI) toxicity onto canola cells: Correlation of microcalorimetric data with cell viability and U(VI) speciation

Dr Susanne Sachs (Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology)

18/05/2018, 13:30

Radionuclides in the Environment, Radioecology

Verbal

The transfer of radionuclides into the food chain is of central concern for the safety assessment of both nuclear waste repositories and radioactive contaminated areas, such as legacies of the former uranium mining. The interaction of radionuclides with plants is mostly described by transfer factors without knowing the underlying processes. However, previous studies showed, for instance, a...

572. Strontium-90 in Polish cow milk

Mr Karol Wiatr (National Veterinary Research Institute)

18/05/2018, 13:45

Radionuclides in the Environment, Radioecology

Verbal

Strontium-90 is released to the environment during accidents in nuclear facilities and nuclear explosions. It can penetrate human organisms with food, including milk. Once absorbed into the body, it is accumulated mainly in bones. Studies were conducted in order to evaluate the current levels of ⁹⁰Sr in cow milk after more than 30 years from the Chernobyl catastrophe and calculate...

697. Role of animal teeth for estimation of environmental pollution of Sr-90 and Cs-137 just after the Fukushima Daiichi Power Plant Accident

Mr Kazuma Koarai (Tohoku University)

18/05/2018, 14:00

Radionuclides in the Environment, Radioecology

Verbal

The Fukushima-Daiichi Nuclear Power Plant (FNPP) accident released a substantial amount of radioactive nuclides into the atmosphere and caused extensive contamination of the environment. Cs-137 and Sr-90 are typical fission nuclides that have a great influence on the environment for several ten years after the accident because of its half-life (30.1 y and 28.9 y). After the deposition onto the...

669. Study of 210Po in Indian tobacco using Liquid Scintillation Spectrometry

Prof. Ulrich W. Scherer (HS Mannheim University of Applied Sciences)

18/05/2018, 14:15

Radionuclides in the Environment, Radioecology

Verbal

A fast radioanalytical method has been developed to measure 210Po in tobacco samples. After microwave digestion Polonium is extracted quantitatively from a 1 M hydrochloric acid solution into a solution of tri-octylamine in toluene. The extract was measured by Liquid Scintillation Counting in alpha mode. Caused by the high counting efficiency the counting time per sample can be reduced...

706. Use of Digital Autoradiography to characterize the effect of acidic leaching on mobilisation of 238U series radionuclides in ISR context.

Mr Axel Angileri (IC2MP)

18/05/2018, 14:30

Radionuclides in the Environment, Radioecology

Verbal

This work is based on a comparative analysis of 2 sand samples from the ISR (in situ recovery) experimental site of the Dulaan Uul uranium prospect (Mongolia). Both sample were polished thin-sections. The first sample (raw ore) come from the untreated ore body and the second (leached sand) is from a part of the ore body which was leached during 6 months. Previous chemical analysis [1] indicate...

518. Tc immobilization on gamma alumina: a study of the reductant presence and absence

Dr Natalia Mayordomo (Helmholtz-Zentrum Dresden-Rossendorf)

18/05/2018, 14:45

Radionuclides in the Environment, Radioecology

Verbal

Technetium isotope ⁹⁹Tc is a fission product of environmental concern, due to its high mobility and its elevated lifetime (2.13×10⁵ years). Among their possible oxidation states, Tc(VII) and Tc(IV) are the most stable ones. On one hand, Tc(VII) occurs under oxidizing redox conditions, being pertechnetate (TcO₄^-) the main species, which is considered...