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Radionuclide biological half-life values for terrestrial and aquatic wildlife

Beresford, N.A.; Beaugelin-Seiller, K.; Burgos, J.; Cujic, M.; Fesenko, S.; Kryshev, A.; Pachal, N.; Real, A.; Su, B.S.; Tagami, K.; Vives i Batlle, J.; Vives-Lynch, S.; Wells, C.; Wood, M.D.. 2015 Radionuclide biological half-life values for terrestrial and aquatic wildlife. Journal of Environmental Radioactivity, 150. 270-276. 10.1016/j.jenvrad.2015.08.018

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Abstract/Summary

The equilibrium concentration ratio is typically the parameter used to estimate organism activity concentrations within wildlife dose assessment tools. Whilst this is assumed to be fit for purpose, there are scenarios such as accidental or irregular, fluctuating, releases from licensed facilities when this might not be the case. In such circumstances, the concentration ratio approach may under- or over-estimate radiation exposure depending upon the time since the release. To carrying out assessments for such releases, a dynamic approach is needed. The simplest and most practical option is representing the uptake and turnover processes by first-order kinetics, for which organism- and element-specific biological half-life data are required. In this paper we describe the development of a freely available international database of radionuclide biological half-life values. The database includes 1907 entries for terrestrial, freshwater, riparian and marine organisms. Biological half-life values are reported for 52 elements across a range of wildlife groups (marine = 9, freshwater = 10, terrestrial = 7 and riparian = 3 groups). Potential applications and limitations of the database are discussed.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.jenvrad.2015.08.018
CEH Sections: Shore
ISSN: 0265-931X
Additional Keywords: radioecology, biological half-life, wildlife, non-human biota, radionuclide
NORA Subject Terms: Ecology and Environment
Date made live: 21 Oct 2015 13:34 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/511874

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