Conveners
Environmental Radioactivity: RER 1
- Jakub Kaizer (Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava)
- Michal Fejgl (National Radiation Protection Institute)
Environmental Radioactivity: RER 2
- Nick Evans (Nottingham Trent University)
- Ana Noguera (Centro Universitario Regional del Este, Universidad de la Repรบblica)
Environmental Radioactivity: RER 3
- Claudia Landstetter (AGES GmbH)
- Sebastian Fichter (Helmholtz-Zentrum Dresden-Rossendorf)
Environmental Radioactivity: Poster session
- There are no conveners in this block
Environmental Radioactivity: RER 4
- Galina Lujaniene
- Rainer Kadan (AGES)
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Claudia Landstetter (AGES)11/05/2026, 15:30Radionuclides in the Environment, RadioecologyVerbal
As part of the laboratory-based environmental monitoring, the Austrian Agency for Health and Food Safety regularly determine the content of radioactivity in various media. In accordance with this official environmental monitoring program, the following media are analysed: air, precipitation, surface water, sewage sludge, wastewater from sewage treatment plants, soil, vegetation, animal feed...
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Michal Fejgl (National Radiation Protection Institute)11/05/2026, 15:48Radionuclides in the Environment, RadioecologyVerbal
System of emergency monitoring of artificial radioactivity in the environment in the Czech Republic is based on the scheme created for routine monitoring. That means, that picked samples are analysed by the lab procedures, only frequency of sampling and sensitivity of the procedures is adjusted according to Decree 360/2016. Radiation events from previous years brought evidence, that monitoring...
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Rainer Kadan (AGES)11/05/2026, 16:06Radionuclides in the Environment, RadioecologyVerbal
Based on the Euratom Treaty Austria has established a comprehensive and thorough environmental monitoring programme. As part of this programme, the levels of radioactivity are regularly determined in various types of environmental media. Air and air filters are among the most frequently examined environmental media. Within the routine monitoring of air filters the Austrian Agency for Health...
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Paul Masselot (ASNR)11/05/2026, 16:24Radionuclides in the Environment, RadioecologyVerbal
Low level tritium measurement has become a critical challenge for environmental monitoring. As environmental tritium concentrations have continuously decreased since the peak following the nuclear tests of the 1950s and 1960s, environmental monitoring laboratories must adapt their analytical methods to meet this new challenge. Using direct measurement, the performance of standard liquid...
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Dr Jakub Kaizer (Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava)11/05/2026, 16:42Radionuclides in the Environment, RadioecologyVerbal
In 2022, the tandem accelerator laboratory of the Centre for Nuclear and Accelerator Technologies (CENTA) of the Comenius University in Bratislava was upgraded with a new accelerator mass spectrometry (AMS) beam line. A combination of a fast-bouncing system, high-resolution magnet, together with offset Faraday cups, two electrostatic analyzers and a multi-layer ionization chamber enable to...
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Duoqiang Pan12/05/2026, 15:30Radionuclides in the Environment, RadioecologyInvited
The occurrence forms and migration behaviors of uranium in the environment are crucial for the environmental safety assessment around nuclear facilities. Based on the geochemical process of uranium in the environment, remediation strategies including phosphoric agents, reductive agents, as well as reductive bacteria treatment, have been proposed to immobilize uranium in the contaminated sites....
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Dr Galina Lujaniene (Center for Physical Sciences and Technology, Vilnius, Lithuania)12/05/2026, 16:00Radionuclides in the Environment, RadioecologyVerbal
The intensive production and use of plastics in industry, medicine, and daily life have led to environmental pollution by various plastics. Fragmentation and degradation of plastic particles entering the environment result in the formation of microplastics (< 5 ยตm) and nanoplastics (< 1000 nm), which are not only smaller but also exhibit higher bioavailability, migration rates, and the ability...
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Tobias Blenke12/05/2026, 16:20Radionuclides in the Environment, RadioecologyVerbal
Wild boars in Europe exhibit an unexpectedly slow temporal decrease of the meat contamination with radiocesium originating from both nuclear weapon test fallout (NWT) and the Chornobyl accident (CA) โ a phenomenon known as the wild-boar paradox. Previous estimates based on the Cs-135/Cs-137 isotopic ratios of Bavarian wild boar meat suggested that: 1. Due to different time spans available for...
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Dr XUE ZHAO (Department of Environmental and Resource Engineering, Technical University of Denmark)12/05/2026, 16:40Radionuclides in the Environment, RadioecologyVerbal
Cesium-137 (137Cs), a key anthropogenic radionuclide from global nuclear weapons fallout, is a powerful tracer for studying long-range atmospheric transport and deposition processes. Polar ice cores, particularly from Greenland, are suitable natural archives for reconstructing these historical fallout patterns. However, the reliability of existing 137Cs records is potentially compromised by...
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Clemens Walther (Universitรคt Hannover, IRS)14/05/2026, 10:30Radionuclides in the Environment, RadioecologyVerbal
The present work investigates Tc uptake from several standardized soils (RefeSol) into wheat, potatoes, carrots and peas. Experiments were performed in batches, columns and lysimeter experiments. Transfer factors and plant availability were obtained by sequential extraction. In order to understanding the plant uptake on a cellular level, the radionuclide distribution was imaged by mass...
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Francisco Javier Guillรฉn Gerada (LARUEX, University of Extremadura)14/05/2026, 10:48Radionuclides in the Environment, RadioecologyVerbal
Fly ash is a by-product from Coal-Fired Power Plants (CFPPs), which is a NORM (Naturally Occurring Radioactive Material) industry, and presents enhanced activity concentration of 226Ra, 232Th and 210Po, among other naturally occurring radionuclides. Formerly considered as waste, it is considered a by-product which can be used in different ways, such as additive to cement production or soil...
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Ana Noguera (Centro Universitario Regional del Este, Universidad de la Repรบblica)14/05/2026, 11:06Radionuclides in the Environment, RadioecologyVerbal
Phosphate fertilizers are widely used in Uruguay due to the natural phosphorus deficiency of most agricultural soils. These fertilizers contain naturally occurring radionuclides which may represent a potential source of radiological exposure for the population. This study aims to evaluate the impact of phosphate fertilization on the distribution of natural radionuclides in horticultural...
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Dr Nick Evans (Nottingham Trent University)14/05/2026, 11:24Radionuclides in the Environment, RadioecologyVerbal
Doramad Radioactive Toothpaste (Doramad Radioaktive Zahncreme) was a brand of toothpaste produced in Germany by Auergesellschaft of Berlin from the 1920s until the end of World War II. This talk will cover the history and marketing of the toothpaste and describe its chemistry and radiochemistry using samples issued to Wehrmacht units fighting on the Eastern Front in 1944/5.
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1149. Adaptations of Phaseolus vulgaris crop root exudate release to U(VI) in hydroponic environmentMs Julia Maetzkow (HZDR)14/05/2026, 11:42Radionuclides in the Environment, RadioecologyVerbal
Adaptations of Phaseolus vulgaris crop root exudate release to U(VI) in hydroponic environment
Julia Marie Mรคtzkow*, Robin Steudtner, Frank Bok, Thorsten Stumpf, Susanne Sachs
Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstraรe 400, 01328 Dresden, Germany
* j.maetzkow@hzdr.deA crucial aspect of radioecology is assessing the risk of environmental...
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Jeremy Long14/05/2026, 17:15Radionuclides in the Environment, RadioecologyPoster
To reveal the biological uptake of f-elements after an unintended release to the environment, a deeper understanding of their interaction with biomolecules is of great importance. Due to its hard Lewis basic character, the phosphoryl group is known to display a strong affinity towards certain metals. In the case of some biomimetic proteins, phosphoryl groups are present in the form of...
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1147. Synthesis of Phosphorylated Peptides Using (py)2PO2[OTf] and Their Interaction with f-ElementsTom Pfandt (TU Dresden)14/05/2026, 17:18Radionuclides in the Environment, RadioecologyPoster
Uranium and rare earth mining, the extensive use of mineral fertilizers, nuclear weapons programs, and reprocessing plants have released significant amounts of lanthanides and actinides worldwide. The environmental contamination with f-elements can pose severe health risks, especially if they enter the human food chain. Hence, a deeper understanding of the interaction of f-elements with...
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Mr Jacob Brookhart (Idaho National Laboratory)14/05/2026, 17:21Radionuclides in the Environment, RadioecologyPoster
Understanding the environmental distribution of radioiodine isotopes produced during pyrochemical reprocessing is critical for evaluating the ecological footprint of next-generation nuclear fuel-cycle facilities. We analyze ยนยฒโนI/ยนยฒโทI ratios in sagebrush (Artemisia tridentata) and in collected air masses across the Idaho National Laboratory (INL) desert complex using Accelerator Mass...
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Michal Fejgl (National Radiation Protection Institute)14/05/2026, 17:24Radionuclides in the Environment, RadioecologyPoster
I-131 is a radionuclide that, in the event of a nuclear accident, contributes the most to the radiation dose to members of the public. Since such exposure occurs within the first few days following a radioactive release, large-scale determination of the effective dose is virtually impossible.
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Current monitoring of I-131 activity concentrations in the Czech Republic relies on HPGe gamma... -
Ms Jaeeun Lee (Korea Institute of Ocean Science and Technology (KIOST)), Dr Intae Kim (Korea Institute of Ocean Science and Technology (KIOST))14/05/2026, 17:27Radionuclides in the Environment, RadioecologyPoster
Quantification of marine radionuclides remains analytically demanding due to their ultratrace concentrations and the need for large sample volumes and extensive pretreatment procedures. Conventional protocols typically involve multi-day chemical separation, prolonged counting times, and sample transport to land-based laboratories, resulting in total turnaround times of several weeks to months....
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Xiaojing Lu14/05/2026, 17:30Radionuclides in the Environment, RadioecologyPoster
This study investigates the biogeochemical cycling of carbon and phosphorus during ureolysis-driven uranium immobilization in mining-impacted waters, where Bacillus pasteurii utilizes urea as a carbon/nitrogen source to generate carbonate ligands and metabolic proteins. We demonstrate that bacterially derived carbonate complexes competitively inhibit U(VI) phosphate crystallization...
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Jaeeun Lee (Korea Institute of Ocean Science and Technology (KIOST), University of Science and Technology (UST))14/05/2026, 17:33Radionuclides in the Environment, RadioecologyPoster
The Indian Ocean has received limited attention in global assessments of anthropogenic radionuclides, despite its substantial role in inter-ocean exchange. Here we present distributions of Cs-137 and Pu-239,240, representative artificial radionuclides, in the western equatorial Indian Ocean between 2017 and 2023. Surface activities of Cs-137 and Pu-239,240 in the study region have decreased...
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Vira Velianyk (Technical University of Liberec)14/05/2026, 17:36Radionuclides in the Environment, RadioecologyPoster
Barium (Ba) and strontium (Sr) are non-essential, potentially toxic elements frequently associated with radioactive waste from abandoned uranium mines. Their chemical similarity to alkaline earth metals, particularly calcium (Ca), enables biological substitution that may disrupt cellular processes in living organisms. Despite their environmental relevance, microbial tolerance mechanisms toward...
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Alena Zavadilovรก (Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering)14/05/2026, 17:39Radionuclides in the Environment, RadioecologyPoster
Hard mineralized tissues such as ivory represent valuable archives of environmental and biological information and are frequently the only available material in archaeological, environmental, and forensic investigations. In addition to age determination, which is essential for assessing the legality of ivory artefacts, information on geographic origin and dietary history is crucial for...
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Andrea Kozlowski14/05/2026, 17:42Radionuclides in the Environment, RadioecologyPoster
A reliable understanding of radionuclide (RN) migration in potential host rock formations is essential for the long-term safety assessment of radioactive waste disposal. During recent decades, major progress has been achieved in this field. Nevertheless, relevant knowledge gaps remain, especially for complex and transient systems at close to nature boundary conditions. The transfer of...
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Eun-Ran Baek (Korea Institute of Ocean Science and Technology (KIOST), University of Science and Technology (UST))14/05/2026, 17:45Radionuclides in the Environment, RadioecologyPoster
In the marine environment, Cs-137 in the water column has been used as an effective tracer for tracking origin of water mass and circulation. To evaluate the spatiotemporal (biannual) variations of Cs-137, we investigated the vertical distributions of 137Cs and hydrography along the latitudinal (13.5ยฐ N) transect of the North Equatorial Current (NEC) region (of the Tropical Pacific) in...
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Dr Galina Lujaniene (Center for Physical Sciences and Technology, Vilnius, Lithuania)14/05/2026, 17:48Radionuclides in the Environment, RadioecologyPoster
Public concern about plastic pollution has led to rapid advances in detecting microplastics in environmental and biological samples. Currently, most research focuses on microplastics, while nanoplastics (NPs), which are more mobile in the environment and more harmful, have received less attention. Heavy metals and radionuclides adsorbed on colloidal-sized nanoparticles (< 1000 nm) can be...
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Dr Sergiy Dubchak (Leibniz University Hannover)14/05/2026, 17:51Radionuclides in the Environment, RadioecologyPoster
Despite ยฒยฒโถRa and ยฒยฒโธRa deriving from different decay chains, the activity ratio in foods can reveal important aspects of radium transfer processes from soil to plants and further on along the food chain. Although ยฒยฒโธRa and ยฒยฒโถRa are frequently found in soils and waters at activity concentrations approximately 1:1, ยฒยฒโธRa has not yet been systematically measured on a comparable scale to ยฒยฒโถRa....
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Prof. Josรฉ Marcus Godoy (Pontifรญcia Universidade Catรณlica do Rio de Janeiro)14/05/2026, 17:54Radionuclides in the Environment, RadioecologyPoster
The main uranium deposit in Brazil is located in the Itataia Mine, between the municipalities of Santa Quitรฉria and Itatira, State of Cearรก, with estimated resources of around 142,000 tons.
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Uranium in Itataia does not occur in isolation but is associated with phosphate. The project plans to separate the phosphate and uranium. Phosphate will be used for fertilizers and animal nutrition, while... -
Prof. Katarzyna Szarลowicz (AGH University of Krakow Faculty of Energy and Fuels Department of Nuclear Energy and Radiochemistry al. A. Mickiewicza 30 30 โ 059 Krakow)14/05/2026, 17:57Radionuclides in the Environment, RadioecologyPoster
Migration of radioactive substances into aquatic environments remains a major concern for nuclear accident preparation and environmental protection. In particular, the role of caesium isotopes can be emphasised, as they are characterized by high migration efficiency. One of the areas of research in this field is the search for effective sorbents to be used as barriers or for environmental...
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Liang-Yu Tao (Radiation Monitoring Center, Nuclear Safety Commission, Kaohsiung City 833172, Taiwan)14/05/2026, 18:00Radionuclides in the Environment, RadioecologyPoster
In this study, a dry decomposition method combined with carbon dioxide absorption was employed to analyze the activity of 14C in biological samples. Samples were lyophilized, pulverized, and combusted in a tube furnace to generate CO2. The evolved gas was sequentially absorbed by alkaline solution and precipitated as calcium carbonate (CaCO3) using calcium chloride. The precipitate was then...
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Tuan HOANG (Thu Dau Mot University)14/05/2026, 18:03Radionuclides in the Environment, RadioecologyPoster
A comprehensive radiological baseline is essential for strengthening national preparedness against potential transboundary nuclear incidents. This study establishes a high-resolution environmental radiation database for Hanoi, Vietnam. Radiation indicatorsโincluding ambient gamma dose rates in the air and the activity concentrations of primordial radionuclides ($^{238}\text{U}$,...
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Tuan HOANG (Thu Dau Mot University)14/05/2026, 18:06Radionuclides in the Environment, RadioecologyPoster
This study assesses the radiological risks of using fly ash from major Vietnamese coal-fired power plants as a supplementary building material. Using HPGe gamma-ray spectrometry, the activity concentrations of ยฒยฒโถRa, ยฒยณยฒTh, and โดโฐK were quantified to calculate internationally recognized hazard indices and model indoor radon exposure scenarios. Results revealed significantly elevated ยฒยฒโถRa and...
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Mr Luiz Antonio Gonรงalves de Azevedo (CENA - USP)14/05/2026, 18:09Radionuclides in the Environment, RadioecologyPoster
Construction and demolition waste (CDW) is a complex combination of materials, including concrete, mortar, tiles, bricks, and ceramic flooring, representing approximately 50% of urban solid waste in medium and large cities. The final disposal of these materials constitutes a serious environmental problem, with a high incidence of illegal dumping, triggering studies on recycling and reuse...
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Dr Nick Evans (Nottingham Trent University)14/05/2026, 18:12Radionuclides in the Environment, RadioecologyPoster
Products claiming to use โNegative Ion Technologyโ have become increasingly available in the UK via outlets such as eBay and Amazon. Many of these products are significant sources of ionising radiation and therefore, far from providing the advertised health benefits are in reality hazardous to health. This study investigated the radioactive composition of โnegative ionโ sleep masks, marketed...
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Mr Mikoลaj Wielgat (The Henryk Niewodniczaลski Institute of Nuclear Physics Polish Academy of Sciences, Krakรณw, Poland)14/05/2026, 18:15Radionuclides in the Environment, RadioecologyPoster
Despite Antarcticaโs geographical isolation and protection under the Antarctic Treaty, the continent remains a recipient of global radioactive fallout originating from past atmospheric nuclear weapons tests and other events, such as the burn-up of the SNAP-9A satellite Long-lived radionuclides, including Cs-137, Sr-90, and transuranic elements such as plutonium isotopes and Am-241 persist in...
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Sang-Han Lee (Korea Research Institute of Standards and Science (KRISS))14/05/2026, 18:18Radionuclides in the Environment, RadioecologyPoster
Since people spend more than 80% of their daily lives indoors, exposure to natural radiation in indoor environments can have a serious impact on human health and lead to global public health issues. Indoor radiation exposure levels are influenced by building materials and construction methods, as well as the geological characteristics of the bedrock and soil on which the building is...
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Ninja Braukmรผller14/05/2026, 18:20Radionuclides in the Environment, RadioecologyPoster
Phytoremediation is an attractive method for decontamination of soils because of its versatility, eco friendliness and sustainability. It has the potential to reduce the volume of low-level contaminated soil significantly at comparatively low costs, which is of great interest, e.g., regarding the shutdown of German nuclear power plants in 2023. It is long known, that plants can take-up...
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Dr Haruka Minowa (The Jikei University School of Medicine)14/05/2026, 18:22Radionuclides in the Environment, RadioecologyPoster
[Introduction]
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Radiostrontium is a critical target for environmental monitoring in nuclear emergencies due to its significant long-term health risk by accumulation in bones. The main isotopes, 90 Sr (half-life 28.9 years) and 89Sr (half-life 50 days), are pure beta emitters whose conventional analysis are complex, time-consuming, and require hazardous reagents. In... -
Vรญt Mareลก14/05/2026, 18:24Radionuclides in the Environment, RadioecologyPoster
The long-lived radionuclide $^{129}I$ might be used as a tracer for assessing environmental contamination, estimating water age, and elucidating water circulation processes on Earth. Since $^{129}I$ is present in environmental samples at ultra-trace levels, highly sensitive analytical techniques are required for the accurate determination of its isotopic ratio with the stable isotope...
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Erik Marenฤรกk (CTU in Prague)14/05/2026, 18:26Radionuclides in the Environment, RadioecologyPoster
The sorption behaviour of Cs(I) on Czech CaโMg bentonite BCV_2017 was investigated under conditions relevant to the engineered barrier systems in deep geological repositories. Batch sorption experiments were performed in synthetic groundwater SGW2 of Ca-HCO$_3$ type using natural bentonite and bentonite samples altered at 95 ยฐC in 1 mol L$^{-1}$ NaCl, KCl, MgCl$_2$, or SGW2. The effects of...
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Tomรกลก Prรกลกek14/05/2026, 18:28Radionuclides in the Environment, RadioecologyPoster
The anthropogenic uranium isotope ยฒยณโถU represents a valuable analytical tool for both qualitative and quantitative assessment of the environmental impacts of nuclear activities. It enables the characterization of associated emissions and nuclear materials, and, owing to the chemically conservative nature of uranium, it can also serve as a tracer for various natural processes. However, its...
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Inna Iarmosh (Leibniz University Hannover / Helmholtz-Zentrum Dresden-Rossendorf)15/05/2026, 10:30Radionuclides in the Environment, RadioecologyVerbal
Migration of radionuclides (RN) in the underground environment is strongly dependent on geochemical conditions that influence aqueous speciation and sorption processes. Current studies of RN transport with groundwater from the engineered near-surface disposal facility (ENSDF) for radioactive waste (RW) located in Chornobyl exclusion zone (ChEZ) use sorption models based on constant values of...
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Jaeeun Lee (Korea Institute of Ocean Science and Technology (KIOST), University of Science and Technology (UST))15/05/2026, 10:48Radionuclides in the Environment, RadioecologyVerbal
In order to quantitatively evaluate and predict the behavior of the anthropogenic radionuclides, this study examined the spatiotemporal distributions and mass budgets of Cs-137 and Pu-239,240 in the seas surrounding Korean Peninsula (i.e., the East/Japan Sea, the Yellow Sea, and the southern sea of Korea) from 2018 to 2024. Surface activities of Cs-137 ranged from 0.56 to 2.43 mBq/kg, while...
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Sebastian Fichter (Helmholtz-Zentrum Dresden-Rossendorf)15/05/2026, 11:06Radionuclides in the Environment, RadioecologyVerbal
The new AMS facility HAMSTER (Helmholtz Accelerator Mass Spectrometer Tracing Environmental Radionuclides) at the Helmholtz-Zentrum Dresden-Rossendorf is dedicated to the analysis of actinides and other long-living radionuclides at ultra-trace levels. Due to the long history of the research campus at Dresden-Rossendorf as the major site for nuclear research in the former GDR, contamination of...
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Krystle Elbers (AGES GmbH)15/05/2026, 11:26Radionuclides in the Environment, RadioecologyVerbal
The environmental monitoring program of the Danube was established in 1987 with a single sampling location at Vienna Nussdorf. In 1989 and 1992 the program was extended to three additional locations (Ottensheim, Wallsee, Greifenstein). The radioecological study was performed by the BOKU University โ partly on behalf of the Austrian Federal Ministry of Agriculture, Regions and Tourism (BMLFUW)....
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Prof. Dmitri Gudkov (Institute of Hydrobiology of the NAS of Ukraine)Radionuclides in the Environment, RadioecologyVerbal
The results of an assessment of the activity concentrations of Sr-90 and Cs-137 absorbed dose rate in fish inhabiting the Chornobyl Exclusion Zone (CEZ) over the period 2010-2025 are presented herein. The studies were carried out in lakes of western and northwestern radioactive traces that are most contaminated with radionuclides - Azbuchin, Vershina, Glyboke, Yanovsky backwater, as well as in...
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