TRS Cs CRwo-water values for the marine environment: analysis, applications and comparisons

Psaltaki, M; Brown, JE; Howard, BJ

dc.contributor.author	Psaltaki, M	en
dc.contributor.author	Brown, JE	en
dc.contributor.author	Howard, BJ	en
dc.date.accessioned	2014-03-01T11:47:19Z
dc.date.available	2014-03-01T11:47:19Z
dc.date.issued	2012	en
dc.identifier.issn	0265931X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/38129
dc.subject	CRwo-media	en
dc.subject	Cs-137	en
dc.subject	Doserates	en
dc.subject	Marine organisms	en
dc.title	TRS Cs CRwo-water values for the marine environment: analysis, applications and comparisons	en
heal.type	other	en
heal.identifier.primary	10.1016/j.jenvrad.2012.07.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jenvrad.2012.07.001	en
heal.publicationDate	2012	en
heal.abstract	A new TRS document on Transfer of radionuclides to Wildlife has compiled equilibrium CRwo-media values for a variety of radionuclides and ecosystems. Assessment tools such as the ERICA Tool use equilibrium whole organism concentration ratios (CRwo-media) to predict radionuclide activity concentrations in wildlife from those in media (e.g. water). The aim of this paper is to compare and contrast model predictions of doses from137Cs to marine organisms using three different approaches: (i) the ERICA Tool utilising the new TRS values to estimate internal and external doses to reference organisms for the Black sea and the Aegean Sea and for the sea close to the Fukushima Dai-ichi plant. (ii) a hydrodynamic site specific model for seawater for parts of the Aegean Sea, Greece which estimates radionuclide concentrations using site specific data and (iii) a biokinetic model for fish applied to the Fukushima releases to the Pacific. The advantages and limitations of these approaches are discussed with respect to determining doses to pelagic fish. The applicability of the three approaches will vary with the objective of an assessment. The site specific model can predict variation in137Cs with depth and uses site specific CR values. The application of the biokinetic model to predicted137Cs activity concentrations in seawater and fish due to near coastal inputs from Fukushima Dai-ichi showed that the maximum internal dose-rates in fish attributable to137Cs would be substantially lower than those determined using equilibrium assumptions in ERICA but the accumulative doses over 100 days were similar. © 2012 Elsevier Ltd. All rights reserved.	en
heal.journalName	Journal of Environmental Radioactivity	en
dc.identifier.doi	10.1016/j.jenvrad.2012.07.001	en