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Dosimetry for animals and plants: Contending with biota diversity.
Ann. ICRP 45, 225-238 (2016)
Diversity of living organisms and their environmental radiation exposure conditions represents a special challenge for non-human dosimetry. In order to contend with such diversity, the International Commission on Radiological Protection (ICRP) has: (a) set up points of reference by providing dose conversion coefficients (DCCs) for reference entities known as 'Reference Animals and Plants' (RAPs); and (b) used dosimetric models that pragmatically assume simple body shapes with uniform composition and density, homogeneous internal contamination, a limited set of idealised external radiation sources, and truncation of the radioactive decay chains. This pragmatic methodology has been further developed and extended systematically. Significant methodological changes include: a new extended approach for assessing doses of external exposure for terrestrial animals, transition to the contemporary ICRP radionuclide database, assessment-specific consideration of the contribution of radioactive progeny to dose coefficients of parent nuclides, and the use of generalised allometric relationships in the estimation of biokinetic or metabolic parameters. The new methodological developments resulted in a revision of the DCCs for RAPs. Tables of the dose coefficients have now been complemented by a web-based software tool, which can be used to calculate a user-specific DCC for an organism of arbitrary mass and shape, located at user-defined height above the ground, and for an arbitrary radionuclide and its radioactive progeny.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Absorbed Dose ; Dose Conversion Coefficients ; Dosimetry ; Environmental Radiation Exposure ; Non-human Biota
ISSN (print) / ISBN
0146-6453
e-ISSN
1872-969X
Journal
Annals of the ICRP
Quellenangaben
Volume: 45,
Pages: 225-238
Publisher
Sage
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Radiation Protection (ISS)