Prof.
Aldahan Ala
(1) Uppsala University; 2) United Arab Emirates University), Prof.
Hou Xiaolin
(1) Institute of Earth Environment, CAS; 2)Technical University of Denmark), Mr
Xing Shan
(Institute of Earth Environment, CAS)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Due to low concentration of iodine in seawater, iodine carrier is normally added as carrier for separation of 129I from matrix using solvent extraction, this is not suitable for the determination of low level 129I in the seawater received less anthropogenic 129I such as those collected in south hemisphere including the Antarctic and deep seas, because of contribution of 129I in the iodine...
Ms
Karolina Szymanska
(Faculty of Chemistry, University of Gdansk)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The aim of the study was to determine 210Po and 210Pb in fur samples collected from 15 breeds of dogs Canis familiaris living in the northern Poland.
The average values of analyzed radionuclides in analyzed dog fur ranged from 0.46±0.02 mBq∙g-1 to 15.05±1.13 mBq∙g-1 for 210Po and from 0.31±0.03 mBq∙g-1 to 9.82±0.53 mBq∙g-1 for 210Pb. The highest activities of 210Po and 210Pb were...
Dr
Natalia Gomzina
(N.P.Bekhtereva Institute of the Human Brain, Russian Academy of Sciences (IHB RAS), St. Petersburg, Russia)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
As to their biological effect, 210Pb and 210Ро - radionuclides are in a group of the most toxic ones. 210Pb and its daughter products are mainly formed in the atmosphere following alpha-decay of 222Rn. Then, together with dry and wet depositions, these products are precipitated on the soil surface and plant leaves, the latter being known as a plant part with an enhanced content of 210Ро [1]....
Ms
Karolina Szymanska
(Faculty of Chemistry, University of Gdansk)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The paper presents unique data of plutonium 241Pu study in seabirds from northern Eurasia, permanently or temporally living at the southern Baltic Sea coast. Together 10 marine birds species were examined: 3 species of permanently residing at the southern Baltic, 4 species of wintering birds and 3 species of migrating birds; about 150 samples were analyzed.
The obtained results indicated...
Ms
Karolina Szymanska
(Faculty of Chemistry, University of Gdansk)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Most contamination studies have focused on alpha emitting plutonium isotopes so far. 241Pu is less important in terms of its radiotoxicity than the α-emitting plutonium radionuclides 238,239,240Pu but is quite significant because of its huge contribution to the whole plutonium fallout. Our previous experiments on air samples indicated extreme increase of 241Pu amount in atmospheric dust in...
Mr
Grzegorz Romanczyk
(University of Gdansk)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The natural radionuclide polonium is daughter of 238U decay series. 210Po is radionuclide with half-lives of 138.38 days. Polonium is one of the most radiotoxic natural radioactive isotopes to man due to its high specific activity and its emission of high-LET alpha radiation. Less than 0.05 g of the radionuclide is considered a lethal dose (LD50/30). Man is exposed to radioactive 210Po by...
Mrs
Ioanna Liatsou
(Chemistry Department, University of Cyprus), Mr
Ioannis Pashalidis
(Chemistry Department, University of Cyprus), Mrs
Maria Efstathiou
(Chemistry Department, University of Cyprus)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Knowledge of the chemical behaviour of (radio)toxic elements in natural/environmental systems is of fundamental importance for the performance of environmental impact assessments and the application of protection measures after possible contamination. The interaction of actinides with marine sediments is of particular interest because marine sediments constitute the final receptors for the...
Dr
Kil Yong Lee
(Korea Institute of Geoscience and Mineral Resources)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Radon is useful as a tracer of certain groundwater discharge processes in marine and aquatic environments. A continuous monitoring system with an equilibrator has used to monitor radon in the fields. However, air-water equilibration time of the equilibrators was longer than 30 min. In the present work, we tried to reduce the equilibration time by a new equilibrator. The proposed equilibrator...
Ms
Ruveyda Kubra ILERI
(Istanbul Technical UniversiIstanbul Technical University, Energy Institutety, Energy Instıtute)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Chernobyl and other nuclear accidents have demonstrated that high levels of radiation can result in impacts on plants and animals, however little is known about the long-term effects of chronic exposure on biodiversity or other population and ecosystem level effects.
The overall aim of this study is to assess the impacts of chronic exposure to radioactivity and chemical pollutants. The...
Mr
Alexey Safonov
(Frumkin"s Institute of Physical Chemistry Russian Academy of Science)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
A. Safonov, V. Ilin, V. Tregubova, T. Babich, E. Zakharova, T. Nazina
Disposing of the nuclear industry wastes in Russia and the U.S.A. in the 20th century have led to significant amount of storages not equipped with appropriate effective/protective barrier systems. This pose risks of environmental pollution through dissipating harmful macrocomponents and radioactive nuclides. The basic RW...
Ms
Vera Labko
(Joint Institute for Power and Nuclear Research - SOSNY, National Academy of Sciences of Belarus)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
A large amount of liquid radioactive wastes are formed during nuclear power plants operating. Radionuclides contained in the wastes are predominantly in the form of stable complexes with organic ligands, such as EDTA, citric and oxalic acids, which complicates the heavy metal separation. Concentrating and processing of liquid radioactive wastes can be greatly simplified after the removal of...
Mr
Aleksey Troshin
(Lobachevsky State University of Nizhni Novgorod)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Complex oxides with the structure of the mineral pollucite (CsAlSi2O6) represent a large group of compounds and they are basic for the development of materials for different purposes, including immobilization of cesium from waste of radiochemical industries and preparation of medical sources radiation. The number of such oxides has increased significantly basing on isomorphism of atoms in the...
Mr
George Ryazantsev
(B.)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
A dangerous factor is considered, which may precede the formation of black microholes, strangelets, magnetic monopoles and other objects in colliders, – the probability of turning the Earth into the "iron planet" or the flow of iron asteroids and meteorites. Proceeding only from real experimental evidence and theory-based provisions: 1) the quark-gluon plasma is already an experimental fact,...
Dr
Jong Myoung Lim
(Korea Atomic Energy Research Institute)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
As an attempt to reduce the social costs and apprehension arising from radioactivity in the environment, an accurate and rapid assessment of radioactivity is highly desirable. Naturally occurring radioactive materials (NORM) are widely spread throughout the environment. Concern regarding the radioactivity from these materials has therefore been growing over the last decade. To determine the...
Mr
Dmitriy Mikhailov
(Nizhny Novgorod State University)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Knowledge of the behavior of materials in radiation fields need if ones are elaborated for radwaste immobilization. Also it is important to prepare a ceramic with high density for aims: medical, research and material science problems, consolidation and transformation of radwaste. Among these materials deserve special attention mineral-like. Natural "experience" shows the ability to save...
Dr
Dmitry Marinin
(Institute of Chemistry FEBRAS, Vladivostok, Russia)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Here we report on development, characterization and performance evaluation of new materials based on selective to radionuclides nanosized sorbents stabilized in water dispersible nanoparticles (latexes). These new materials can be applicable as fixatives (dust suppressors), when latexes are film-forming, and as colloid stable sorbents for decontamination of solid bulk materials, when any type...
Dr
Anna Voronina
(Ural Federal University), Mrs
Marina Blinova
(Ural Federal University)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Decreasing of transfer of radionuclides from soil to vegetation is the main purpose of remediation of radioactively contaminated lands with the aim of their returning to farming industry. The method of addition of sorbents to soils is seemed to be the most afficient in these cases. Using sorbents should possess affinity to natural systems, high specificity and selectivity and also...
Dr
Ewa Starościak
(Central Laboratory for Radiological Protection)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Uranium isotopes U-238 and its decay product U-234 and also U-235 are isotopes primary existing from the beginning of the earth. These isotopes are present in all components of the environment. The main source of uranium isotopes passing into the human body is drinking water and food. Uranium is toxic both chemically - as a heavy metal and radiochemically - as an emitter of alpha and gamma...
Anna Paliga
(ФГАОУ ВПО «УрФУ имени первого Президента России Б.Н.Ельцина»)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Determination of the isotopic composition of natural radionuclides in natural waters is an integral part of radioecological monitoring. A full analysis of thorium radionuclides should solve two problems: determination of analytical concentration and isotopic composition. The main problem in the analysis of fresh water with low thorium content is preconcentration step; for samples with a high...
Prof.
Vladimir Kolotov
(Vernadsky Institute of Geochemistry and Analytical Chemistry)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Automated system for radiation control of air space near the nuclear power plant based on using of non-stop remote gamma-spectroscopic control of nuclear power plant radioactive emission (mainly from ventilation pipe) is developed. The task of the system consists in estimation the potential risk of terrain contamination outside the nuclear power area. The system should provide authorities of...
Dr
Edyta Łokas
(H.Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Soils play an important role in accumulation of airborne radionuclides. Plutonium isotopes released by nuclear weapons testing are still present in the environment, especially in soils. There are several sources of radioactive contamination in the European sector of the Arctic. The most substantial include global weapons fallout, fallout from nuclear weapons testing near Novaya Zemlya and from...
Ms
Katharina Fritsch
(Helmholtz-Zentrum Dresden-Rossendorf)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Argillaceous rock and clay minerals have properties that make them very suitable for nuclear waste storage. They are practically impermeable and have high sorption capacities. North German clay deposits feature pore waters of particularly high ionic strengths, ranging from 1.8 mol/l to 3.3 mol/l. in the depths relevant for nuclear waste repositories.[1] To enable an informed decision about the...
Mr
Sarunas Buivydas
(State Research Institute Center for Physical Sciences and Technology)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Application of an appropriate model and transfer parameters for radionuclide migration in soils and fresh water ecosystems (e.g. lakes) to predict the long-term radionuclide behaviour is of great concern. Transfer of radionuclides in lake ecosystem is mostly governed by the processes of diffusion, perturbation of soil or lake bottom sediments and transport of long- lived radionuclides with the...
Ms
Lenka Hrušková
(Charles University in Prague), Dr
Viktor Goliáš
(Charles University in Prague)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Goliáš V.1, Hrušková L.1, Lipanský T.1, Przylibski T.A.2, Procházka R.3
1Charles University in Prague, Faculty of Science, wiki@natur.cuni.cz, lehruskova@centrum.cz, tomas@watersystem.cz
2Wrocław University of Technology, Faculty of Geoengineering, Mining and Geology, tadeusz.przylibski@pwr.wroc.pl
3Lesní 1079, Dobřichovice, Czech Republic, choda@seznam.cz
Keywords: groundwater,...
Dr
Maxim Samsonov
(Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
In connection with the development of modern high-tech industries and changing market conditions in the last few years have seen a growing interest in rare-earth elements (REE). This necessitates the creation of new technologies for processing of mineral raw materials, as well as various industrial wastes and secondary resources. Virtually all fields of REE are part of complex ores,...
Mr
Adrian Krajnak
(Comenius University in Bratislava, Faculty of Natural Sciences)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
In a previous research for the deep geological repository of radioactive waste and spent nuclear fuel, the swelling potential of bentonites from Slovak deposits was evaluated by indicative parameters (Atterberg liquid limit) and by swelling pressure tests (Adamcova et al., 2009). The noticed absence of data on shrinkage behaviour initiated a pilot research of bentonite shrinkage parameters in...
Prof.
Victor Remez
(Ecsorb, the Compamy)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Recent investigations show that sorption properties of solids in natural or synthetic humic acid (HA) solutions strongly depend on the ability of HA to form complexes with ions of sorbate and to interact with the surface of solids. In general, both factors are negative for the sorption technologies due to the known dramatic diminution of sorption processes in HA solutions. We found that...
Prof.
Vitaly Epimakhov
(Nikolaevich)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Large amounts of low-density thermal insulation mineral wool waste contaminated by radionuclides arise from NPP operation. Melting of this waste reduces its volume by more than 10 times. Mineral fibers begin to lose their elastic properties at 440 оС and to soften at 700 оС. The minimum process temperature for molten fiber formation is ~ 1500 оС. Experiments were performed on mineral wool mats...
Ms
Agata Oszczak
(Institute of Nuclear Chemistry and Technology), Dr
Leon Fuks
(Institute of Nuclear Chemistry and Technology)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Proficiency tests (PT) on the determination of radionuclides in food and environmental samples have been organized by the National Atomic Energy Agency (NAEA), Poland, since 2004. The activity of the following radionuclides: 241Am, 137Cs, 3H, 239Pu, 226Ra and 90Sr were determined in water, food and soil. The PTs have been conducted by the Institute of Nuclear Chemistry and Technology (INCT),...
Dr
Magdalena Długosz-Lisiecka
(Technical University of Lodz, Faculty of Chemistry)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Natural radionuclides can be very good indicators of all hydrological and biogeochemical phenomena occurring in the water environment. Typical uses of environmental isotopes include the identification of source of water and solutes, determination of water flow paths, assessment of nutrients within the ecosystem, water budget. A few elements exhibit variations in their isotopic composition,...
Dr
Vitaly Epimakhov
(Nikolaevich)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The use of sulfuric acid instead of nitric acid for regeneration of cation-exchange resins arising from NPP operations produces sulfates which can form crystalline hydrates. Based on this capability, cement instead of bitumen can be used as a matrix for binding liquid radwaste (LRW), and high salt concentrates can be incorporated into Portland cement. Experiments simulating inundation of waste...
Dr
Yoshikazu Kikawada
(Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The mobility of radioactive cesium (Cs) in contaminated soils affected by the Fukushima Dai-ichi nuclear disaster in 2011 was studied by single-step and sequential extraction experiments.
The Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in March 2011 resulted in serious radioactivity contamination in areas adjacent to the FDNPP. Meanwhile, radioactive cesium originated from the...
Ms
Hanna Tuovinen
(University of Helsinki, Laboratory of Radiochemistry)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
There is increasing awareness of the radiological impact of non-nuclear industries that extract and/or process ores containing naturally occurring radioactive material (NORM). These industrial activities may result in significant environmental problems if the waste generated during processing is not adequately managed. In 2010, a new project was launched in Finland, the object of which is to...
Ms
AGNIESZKA FULARA
(CENTRAL LABORATORY FOR RADIOLOGICAL PROTECTION)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Radioactive isotopes of anthropogenic origin have appeared in the environment as a result of human activities. The main sources of these radionuclides were 1) atmospheric testing of nuclear weapons done in the years 1945-1980 with particular intensity in 1951-1958 and later in 1961-1962 and 2) the Chernobyl nuclear reactor accident in April 1986. The greatest contribution to the...
Dr
Najat Kassim Mohammed
(University of Dar es Salaam)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Economically viable uranium deposit has been discovered at Bahi district in Dodoma Region of Tanzania. The uranium deposit in Bahi is reported to be shallow therefore the activity concentration of the area is expected to be high. Exploration which is still going on in Bahi might also result into radioactive contamination into the environment. The radioactivity might then be transferred to the...
Dr
Yoon Yeol Yoon
(Korea Institute of Geoscience and Mineral Resources)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Determining the relationship between surface water and groundwater systems is critical to understanding hydrogeological systems, protecting riverine ecosystems, and managing water resources. Due to its high activities in groundwater, the radionuclide 222Rn is a sensitive natural tracer to detect and quantify groundwater. In this study 222Rn and stable isotope were used as a tracer in...
Dr
João M. Oliveira
(Instituto Superior Técnico/LPSR)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Table wines are part of the Mediterranean diet and a common component of the adults’ diet in many countries. Wines are produced from vineyards grown in soils of different types from loam soils to granitic soils and in regions with different natural radioactivity levels. Twenty table wines, red and white, from large producers in several regions of Portugal, encompassing uranium provinces, were...
Mr
George Ryazantsev
(B.)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
In 1979, there was a serious accident in the U.S. at the Three Mile Island nuclear power plant which involved two power-generating units. In 1986, the world witnessed a large-scale disaster in the USSR at the Chernobyl nuclear power plant that operated four power reactors. The last major accident occurred in March of 2011 in Japan. That accident involved six reactors. It is known that during...
Dr
Quentin Raffy
(IPHC - Strasbourg University)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Given uranium toxicity, comprehension of uranyl interaction with biological material of human relevance is of utmost importance, from the whole body scale to the molecular level. At the molecular level, uranium interaction with proteins has attracted a lot of attention, in particular the blood serum proteins Human Serum Albumin (HSA) and Transferrin, which are likely to transport uranyl in the...
Dr
Natalia Gomzina
(N.P.Bekhtereva Institute of the Human Brain, Russian Academy of Sciences (IHB RAS), St. Petersburg, Russia)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
In recent decades, a global trend has been observed in an increased consumption of medicinal plants and herbal formulations, which makes monitoring of herbal medicines to be an actual problem as regards their pollution with heavy metals, pesticides and radionuclides [1]. The highly-toxic are long-lived decay products of U-238 Series, 210Pb and 210Po. In plants, which are used for making...
Mr
Andrius Puzas
(Center for Physical Sciences and Technology, LITHUANIA)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Inductively coupled plasma high resolution mass spectrometry (ICP-MS) is widely used technique for 240Pu/239Pu isotopic analysis tool which leads to use plutonium isotopic composition to assess the artificial radionuclide source in the environment fast and accurately. ICP-MS measurements usually are performed in low resolution mode (m/dm=300) to enhance and maximize plutonium signal sensivity....
Mr
Grzegorz Olszewski
(University of Gdansk, Faculty of Chemistry, Institute of Environmental Protection and Human Health, Chair of Environmental Chemistry and Radiochemistry, Laboratory of Analytical and Environmental Radiochemistry)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The aim of this study was to examine the concentrations of 210Po, 210Pb, 234U, 235U and 238U in surface soils samples collected in the area of phosphogypsum waste heap in Wiślinka (northern Poland) and assessing its impact on the surrounding environment. Concentrations in analyzed soils samples were estimated between 3.0±0.2 mBq•g-1 dry wt. and 324.5±15.41 mBq•g-1 dry wt. for 210Po and between...
Dr
Lidia Rosiak
(Central Laboratory for Radiological Protection)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
210Po is natural, short-lived (T1/2 =138.3 days) alpha radiation emitter. It occurs in Earth crust in trace amounts as a product of radioactive Uranium–Radium decay series. The isotope is found in small amounts in human environment: air (<0.5 mBq/m3), drinking water (about 0.5 mBq/L), food (20-200 mBq/kg), tobacco (13.3 mBq/cigarette in Poland ) and cigarette smoke (9.62 mBq/cigarette in...
Ms
Karolina Szymanska
(Faculty of Chemistry, University of Gdansk)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The main aim project was 210Po determination in caps and stems of mushrooms from Leccinum pseudoscabrum, Leccinum aurantiacum, Leccinum vulpinum, Leccinum duriusculum and Leccinum quercinum collected in Pomorskie, northern Poland. Mushrooms are organisms which contain a lot of water (75-90%). Mushrooms absorb heavy metals such as mercury, chrome, cadmium and radionuclides: e.g. polonium,...
Prof.
Volodymyr Strelko
(Institute for Sorption and Problems of Endoecology of National Academy of Sciences of Ukraine)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The report presents data about the new method of synthesis of inorganic ion-exchangers in continuous mode of sol-gel process, which provides the possibility of obtaining the spherically granulated hydrogels and xerogels of highly porous oxides, silicates and phosphates of polyvalent metals. The basis of the process – the reactions of templating competitive interactions between Fe and Al salts...
Dr
Galina Lujaniene
(SRI Center for Physical Sciences and Technology, Savanorių ave 231, Vilnius, LT-02300, Lithuania)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Environmental behavior of Pu isotopes can be strongly affected by oxidation–reduction reactions which can result in changes of their speciation, solubility and transport. Pu(V) and Pu(IV) sorption to three well characterized samples from the industrial exploitation site Šaltiškiai in North Lithuania was used to study their sorption kinetics and oxidation state distribution in natural clay...
Mr
Mingli Zhang
(School of Geography Science, Nanjing Normal University; Center for Nuclear Technology, Technical university of Denmark, Risø Campus)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Surface sediment cores from the Zhushan bay of Taihu lake in China were collected. In this study, the concentration of eleven heavy mentals(Al, Co, Cr, Cu, Mn, Ni, Ti, V, Zn, Pb, Cs) and the radioactivity of two radionuclides (210Pb and 137Cs) were investigated. The mean concentration of Cr, Cu, Ti, Pb indicated is slightly higher than the background values, and the rest doesn’t exceed the...
Dr
Fernando P. Carvalho
(Instituto Superior Técnico/Laboratório de Protecção e Segurança Radiológica)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Uranium mining and milling is known to produce enhancement of environmental radioactivity. In particular through surface runoff, waste water discharges, acid mine drainage, and seepage, radioactivity levels may increase in the surrounding areas and contaminate groundwater and surface waters. Results from radioactivity surveys in the center north of Portugal to assess the impact of past uranium...
Dr
Nasser Alkhomashi
(King Abdulaziz City for Science and Technology (KACST), Saudi Arabia)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Studies of radioactivity in sea foods are important in estimating the radiological hazards and dose exposure to the public. The importance has increased following Japan’s devastating 2011 earthquake and the following nuclear accident of Fukushima power plant. This is because there is a fear about risks of leaked radiation from the Fukushima Daiichi nuclear power plant to the Pacific Ocean...
Dr
Ivo Světlík
(Nuclear Physics Institute AS CR)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
A calibration curve IntCal has been applied for radiocarbon dating of terrestrial samples to correct fine variations of 14C activity in the environment. The calibration curve has been constructed from precise determinations of 14C levels in sample sequences (e.g. tree rings, lake varves, coral layers, etc.). The age determinations of these samples have been carried out using other dating...
Ms
Ivana Milanović
(Rudjer Boskovic Institute, Laboratory for Radioecology)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Radiostrontium as a high yield fission product with long physical (28.8 years) and biological half-life (~49 years), is one of the most hazardous radiocontaminants in the environment. Therefore, almost all environmental radioactivity monitoring programs include its quantitative determination. Due to its radiochemical properties standard procedure for its determination is complicated and time...
Petra Količová
(Technical University of Ostrava)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
7Be is a natural radioisotope (half-life 53.3 d) produced in cosmic-ray spallation processes on atmospheric nitrogen and oxygen. We sampled individual rain events (September 2013 – March 2014) in a collector (1 m above the roof of the Technical University of Ostrava) and simultaneously collected relevant meteorological data from the station on the same roof. Rain samples were filtered and the...
Mr
Ilya Volkov
(Institute of Solid State Chemistry, UB RAS)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Humic acids (HA) are one of few omnipresent natural substances, which govern the migration trends of chemical elements in the biosphere. Being a complex mixture of high molecular organic compounds, they take part in accumulation, aqueous transfer and sorption of chemical elements in natural environment. The impact of HA on the sorption of stable trace elements and radionuclides in the...
Dr
Gabriela Wallova
(Water Research Institute Bratislava)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The Bosna River is a tributary of the Sava River. It flows through the central part of Bosnia and Herzegovina. Along the Bosna River course, high density of settlements, agricultural areas, industries, not existing or not properly functioning urban and industrial
wastewater treatment plants contribute largely to the rivers excessive pollution. The main objective of the project “Development of...
Dr
Alena Zavadilova
(Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
We refer about a development of the measurement technique enabling the determination of low uranium concentrations. The method was inspired by a commercially available KPA method (kinetic phosphorescence analysis). It is fast, sensitive, and non-destructive, allowing the uranium concentrations determination on a mass basis of μg U/l.
Contrary to the conventional KPA method it is in our...
Ms
Sinikka Virtanen
(University of Helsinki, Department of Chemistry, Laboratory of Radiochemistry)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Studies on the competitive sorption of radionuclides and other metal ions are often conducted using elements with similar chemical properties, such as oxidation states. A study by Bradbury and Baeyens [1] suggests that metal ion sorption on clay minerals is non-competitive when the metal ions have significantly different chemical properties. Thus, metals with same oxidation states and a...
Ms
Melanie Müller
(Institute of Analytical Chemistry, TU Dresden)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Thermodynamic data for actinide-organic complexes are required for long term safety assessment of nuclear waste disposal. Particular attention should be paid to higher ionic strengths, which are to be expected in salt and clay rock formations. Higher temperatures have also to be considered, since temperatures can go up to 100°C in the near field of radioactive waste disposal. Up to now most of...
Mrs
Yulia Konevnik
(IPHE RAS)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
Three major variants for decontamination of nuclear sites are considered in Russia: (i) dismantling; (ii) conversion; and (iii) burial in-place. The concept of decontamination of a shutdown industrial uranium graphite reactor (IUGR) by burial in-place was accepted by Rosatom in 2009. The safety of a buried IUGR is based on a system of protective barriers consisting of both engineered barriers...
Mr
Alexey Safonov
(Frumkin"s Institute of Physical Chemistry Russian Academy of Science)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
During the period of nuclear power facilities in the world, Russian Federation and the United States have accumulated a significant amount of radioactive waste (RW) in liquid form, which contacted with the biosphere in accidental emissions and while being stored in open repositories. Radioactive waste in the environment cause number of toxic effects by ionizing radiation and chemical...
Dr
Yoon Yeol Yoon
(Korea Institute of Geoscience and Mineral Resources)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The properties of radon (half-life 3.8 days, chemically inert) and high activities in groundwater make it a powerful and potentially useful tracer of hydrological processes at the interface between surface and sub-surface water bodies. The groundwater-surface water interface is a dynamic system that plays an important role in the hydrogeological functioning of many catchments. The physical...
Ms
Jelena Petrović
(Institute for the Application of Nuclear Energy, University of Belgrade, Serbia)
13/05/2014, 17:15
Radionuclides in the Environment, Radioecology
Poster
The 137Cs activity concentrations in six undisturbed soil profiles collected during 2013 in the basin of Pčinja River, southeastern Serbia, were determined gamma-ray spectrometrically. Soil samples were collected at 5 cm intervals up to 50 cm depth at each location. The value of 137Cs activity concentration when each soil layers of all soil profiles considered equal, ranged from 0.29 to 70.9...
