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Quantifying the transfer of radionuclides to food products from domestic farm animals.

Abstract：

:Databases have been compiled to derive parameter values relevant to the transfer of radionuclides from feedstuffs to domestic animal products to provide a revision to the IAEA Handbook on transfer parameters TRS 364. Significant new data inputs have been incorporated into the databases from an extensive review of Russian language information and inclusion of data published since the early 1990s. Fractional gastrointestinal absorption in adult ruminants presented in the revised handbook are generally similar to those recommended for adult humans by the ICRP. Transfer coefficient values are presented in the handbook for a range of radionuclides to farm animal products. For most animal products, transfer coefficient values for elements additional to those in TRS 364 are provided although many data gaps remain. Transfer coefficients generally vary between species with larger species having lower values than smaller species. It has been suggested that the difference is partly due to the inclusion of dietary dry matter intake in the estimation of transfer coefficient and that whilst dietary intake increases with size nutrient concentrations do not. An alternative approach to quantifying transfer by using concentration ratios (CR), which do not consider dietary intake, has been evaluated. CR values compiled for the handbook vary considerably less between species than transfer coefficient values. The advantage of the CR approach is that values derived for one species could be applied to species for which there are no data. However, transfer coefficients will continue to be used as few studies currently report CR values or give data from which they can be estimated.

journal_name

J Environ Radioact

journal_title

Journal of environmental radioactivity

authors

Howard BJ,Beresford NA,Barnett CL,Fesenko S

doi

10.1016/j.jenvrad.2009.03.010

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

767-73

issue

9

eissn

0265-931X

issn

1879-1700

pii

S0265-931X(09)00047-2

journal_volume

100

pub_type

杂志文章

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