Conveners
RER 1
- Michal Fejgl (National Radiation Protection Institute)
- Pavol Povinec (BIONT a.s.)
Contamination of the Baltic sea with radionuclides and potential risk to aquatic biota
G. Lujanienė1, B. Šilobritienė2, D. Tracevičienė1, S. Šemčuk1, V. Malejevas3
1SRI Center for Physical Sciences and Technology, Vilnius, Savanorių pr. 231, LT-02300, Lithuania
2 Ministry of Environment, A. Jaksto g. 4, LT-01105 Vilnius, Lithuania
3Marine Research Institute, Klaipėda University,...
An accident of Fukushima Dai-ichi Nuclear Power Plant (FNPP1) in March 2011 resulted in a large amount release of radiocesium (134Cs and 137Cs) into the North Pacific Ocean. Radiocesium deposited on and discharged directly into coastal area of Japan in the north of the Kuroshio Front had been transported eastward in surface layer and reached to the North American Continent by 2015 and early...
We report for the first time an environmental uranium-236 (236U) and uranium-233 (233U) dataset, on samples in the Greenland marine environment during the 5-year period (2012-2016). Results are discussed in terms of time evolution and spatial distribution characters of radionuclides (236U) concentrations and isotopic ratios of 236U/238U and 233U/236U. Our results indicate that 236U...
Abstract
Anthropogenic $^{129}$I release increased the $^{129}$I/$^{127}$I ratio by several orders of magnitude. In the 1960s, detonations of atmospheric nuclear weapons contributed to the $^{129}$I release; today the main sources are the reprocessing plants in La Hague and Sellafield. 90 % of $^{129}$I is released into the ocean, gaseous emissions account for only 10 %. Today, this...
239Pu (T1/2=24110 yr) and 240Pu (T1/2=6563 yr), because of their high chemical toxicity, long half-lives and high particle affinity, are not only good indicators for radioactive pollution but also useful geochemical tracers for better understanding a variety of marine processes. Pu isotopes have been intensively studied in the East China Sea to investigate their source terms, transport,...
