RadChem 2018

Session

RER 1

RER.1

15 May 2018, 10:30

Casino Conference Centre

Conveners

RER 1

• Michal Fejgl (National Radiation Protection Institute)
• Pavol Povinec (BIONT a.s.)

695. Contamination of the Baltic sea with radionuclides and potential risk to aquatic biota

Dr Galina Lujanienė (SRI Center for Physical Sciences and Technology)

15/05/2018, 10:30

Radionuclides in the Environment, Radioecology

Invited

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,...

442. Time evolution of Fukushima-derived radiocesium in the western subtropical gyre of the North Pacific Ocean by 2017

Dr Yuichiro Kumamoto (Japan Agency for Marine-Earth Science and Technology)

15/05/2018, 11:00

Radionuclides in the Environment, Radioecology

Verbal

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...

619. 236U and 233U around Greenland coast

Dr Jixin Qiao (DTU Nutech, Technical University of Denmark)

15/05/2018, 11:15

Radionuclides in the Environment, Radioecology

Verbal

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...

675. I-129 and I-127 speciation in sea water by IC-ICP-MS and AMX

Mr Alex Hölzer (Institute for Radioecology and Radiation Protection, Leibniz Universität Hannover)

15/05/2018, 11:30

Radionuclides in the Environment, Radioecology

Verbal

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...

658. Sedimentary record of plutonium in the North Yellow Sea and response to catchment environment of inflow rivers

Dr Yihong Xu (Nanjing University)

15/05/2018, 11:45

Radionuclides in the Environment, Radioecology

Verbal

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,...