Marine radionuclide transport modelling: Recent developments, problems and challenges

Periáñez, R.; Brovchenko, Igor; Duffa, Céline; Iøsjpe, M.; Jung, Kyung‐Ho; Kim, K.O.; Kobayashi, Takuya; Lipták, Ľudovít; Little, Andrew; Maderich, Vladіmir; McGinnity, P.; Min, B. I.; Nies, H.; Osvath, I.; Suh, Kyung-Suk; With, G. de

doi:10.1016/j.envsoft.2019.104523

Cited by 48 publications

(20 citation statements)

References 159 publications

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“…Predicted concentrations of radionuclides in fish agreed well with the measurements in both case studies. It is shown that the MCKA model with the defined generic parameters could be used in different marine environments without calibration based on a posteriori information, which is important for emergency decision support systems (Periáñez et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Multi-compartment kinetic–allometric (MCKA) model of radionuclide bioaccumulation in marine fish

Kim

Maderich

Jung³

2021

Biogeosciences

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Abstract. A model of the radionuclide accumulation in fish taking into account the contribution of different tissues and allometry is presented. The basic model assumptions are as follows. (i) A fish organism is represented by several compartments in which radionuclides are homogeneously distributed. (ii) The compartments correspond to three groups of organs or tissues: muscle, bones and organs (kidney, liver, gonads, etc.) differing in metabolic function. (iii) Two input compartments include gills absorbing contamination from water and digestive tract through which contaminated food is absorbed. (iv) The absorbed radionuclide is redistributed between organs or tissues according to their metabolic functions. (v) The elimination of assimilated elements from each group of organs or tissues differs, reflecting differences in specific tissues or organs in which elements were accumulated. (vi) The food and water uptake rates, elimination rate, and growth rate depend on the metabolic rate, which is scaled by fish mass to the 3/4 power. The analytical solutions of the system of model equations describing dynamics of the assimilation and elimination of 134Cs, 57Co, 60Co, 54Mn and 65Zn, which are preferably accumulated in different tissues, exhibited good agreement with the laboratory experiments. The developed multi-compartment kinetic–allometric model was embedded into the box model POSEIDON-R (Maderich et al., 2018b), which describes transport of radionuclides in water, accumulation in the sediment and transfer of radionuclides through the pelagic and benthic food webs. The POSEIDON-R model was applied for the simulation of the transport and fate of 60Co and 54Mn routinely released from Forsmark Nuclear Power Plant (NPP) located on the Baltic Sea coast of Sweden and for calculation of 90Sr concentration in fish after the accident at Fukushima Dai-ichi NPP. Computed concentrations of radionuclides in fish agree with the measurements much better than calculated using standard whole-body model and target tissue model. The model with the defined generic parameters could be used in different marine environments without calibration based on a posteriori information, which is important for emergency decision support systems.

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Section: Discussionmentioning

confidence: 99%

Multi-compartment kinetic–allometric (MCKA) model of radionuclide bioaccumulation in marine fish

Kim

Maderich

Jung³

2021

Biogeosciences

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“…Despite the rapid development of numerical hydrodynamic models, the compartment (box) models continue to play an important role in the modelling of transport and fate of radioactivity in marine environments because of its relative simplicity and flexibility [1]. Originally, POSEIDON model [2] was developed to assess the radiological consequences of instantaneous or continuous releases of a mixture of radionuclides in European sea waters.…”

Section: Methods Detailsmentioning

confidence: 99%

The POSEIDON-R compartment model for the prediction of transport and fate of radionuclides in the marine environment

et al. 2018

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“…The transport of radionuclides within the Arctic has been constantly studied and modelled by the Norwegian Radiation and Nuclear Safety Authority (DSA). Moreover, numerical models simulating transport in the marine environment are constantly being improved since the pioneering work of Prandle (1984), where the fate of 137 Cs was simulated after being released from the Sellafield nuclear reprocessing plant (Periáñez et al, 2019).…”

Section: Artificial Radionuclidesmentioning

confidence: 99%

“…Radionuclides can be divided into non-conservative-primarily adsorbed by solid particles (e.g. plutonium)-and conservative (strontium, caesium, technetium)-which remain dissolved in water and can be transported by water currents (Periáñez et al, 2019). Some radionuclides are also particle-reactive and readily adsorb on SPM and, in consequence, undergo sedimentation to the sea bed.…”

Section: Artificial Radionuclidesmentioning

confidence: 99%

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Sources, fate and distribution of inorganic contaminants in the Svalbard area, representative of a typical Arctic critical environment–a review

Rudnicka-Kępa

Zaborska

2021

Environ Monit Assess

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Global environmental changes not only contribute to the modification of global pollution transport pathways but can also alter contaminant fate within the Arctic. Recent reports underline the importance of secondary sources of pollution, e.g. melting glaciers, thawing permafrost or increased riverine run-off. This article reviews reports on the European Arctic–we concentrate on the Svalbard region–and environmental contamination by inorganic pollutants (heavy metals and artificial radionuclides), including their transport pathways, their fate in the Arctic environment and the concentrations of individual elements in the ecosystem. This review presents in detail the secondary contaminant sources and tries to identify knowledge gaps, as well as indicate needs for further research. Concentrations of heavy metals and radionuclides in Svalbard have been studied, in various environmental elements since the beginning of the twentieth century. In the last 5 years, the highest concentrations of Cd (13 mg kg−1) and As (28 mg kg−1) were recorded for organic-rich soils, while levels of Pb (99 mg kg−1), Hg (1 mg kg−1), Zn (496 mg kg−1) and Cu (688 mg kg−1) were recorded for marine sediments. Increased heavy metal concentrations were also recorded in some flora and fauna species. For radionuclides in the last 5 years, the highest concentrations of 137Cs (4500 Bq kg−1), 238Pu (2 Bq kg−1) and 239 + 240Pu (43 Bq kg−1) were recorded for cryoconites, and the highest concentration of 241Am (570 Bq kg−1) was recorded in surface sediments. However, no contamination of flora and fauna with radionuclides was observed.

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Marine radionuclide transport modelling: Recent developments, problems and challenges

Cited by 48 publications

References 159 publications

Multi-compartment kinetic–allometric (MCKA) model of radionuclide bioaccumulation in marine fish

Multi-compartment kinetic–allometric (MCKA) model of radionuclide bioaccumulation in marine fish

The POSEIDON-R compartment model for the prediction of transport and fate of radionuclides in the marine environment

Sources, fate and distribution of inorganic contaminants in the Svalbard area, representative of a typical Arctic critical environment–a review

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