caa a22 4500 445812907 CHVBK 20180317145217.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00411-011-0362-0 doi (NATIONALLICENCE)springer-10.1007/s00411-011-0362-0 Dynamic model for tritium transfer in an aquatic food chain [Elektronische Daten] [A. Melintescu, D. Galeriu] Tritium (3H) is released from some nuclear facilities in relatively large quantities. It is a ubiquitous isotope because it enters straight into organisms, behaving essentially identically to its stable analogue (hydrogen). Tritium is a key radionuclide in the aquatic environment, in some cases, contributing significantly to the doses received by aquatic, non-human biota and by humans. The updated model presented here is based on more standardized, comprehensive assessments than previously used for the aquatic food chain, including the benthic flora and fauna, with an explicit application to the Danube ecosystem, as well as an extension to the special case of dissolved organic tritium (DOT). The model predicts the organically bound tritium (OBT) in the primary producers (the autotrophs, such as phytoplankton and algae) and in the consumers (the heterotrophs) using their bioenergetics, which involves the investigation of energy expenditure, losses, gains and efficiencies of transformations in the body. The model described in the present study intends to be more specific than a screening-level model, by including a metabolic approach and a description of the direct uptake of DOT in marine phytoplankton and invertebrates. For a better control of tritium transfer into the environment, not only tritiated water must be monitored, but also the other chemical forms and most importantly OBT, in the food chain. Springer-Verlag, 2011 Melintescu A. Life and Environmental Physics Department, "Horia Hulubei” National Institute for Physics and Nuclear Engineering, 30 Reactorului St., POB MG-6, 077125, Bucharest-Magurele, Romania aut Galeriu D. Life and Environmental Physics Department, "Horia Hulubei” National Institute for Physics and Nuclear Engineering, 30 Reactorului St., POB MG-6, 077125, Bucharest-Magurele, Romania aut Radiation and Environmental Biophysics Springer-Verlag 50/3(2011-08-01), 459-473 0301-634X 50:3<459 2011 50 411 https://doi.org/10.1007/s00411-011-0362-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00411-011-0362-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Melintescu A. Life and Environmental Physics Department, "Horia Hulubei” National Institute for Physics and Nuclear Engineering, 30 Reactorului St., POB MG-6, 077125, Bucharest-Magurele, Romania aut NATIONALLICENCE 700 1- Galeriu D. Life and Environmental Physics Department, "Horia Hulubei” National Institute for Physics and Nuclear Engineering, 30 Reactorului St., POB MG-6, 077125, Bucharest-Magurele, Romania aut NATIONALLICENCE 773 0- Radiation and Environmental Biophysics Springer-Verlag 50/3(2011-08-01), 459-473 0301-634X 50:3<459 2011 50 411 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer