Results of an international comparison for the determination of radionuclide activity in bilberry material.
Applied Radiation and Isotopes(2012)
Abstract
Radioactivity found in wild food products has assumed greater importance when assessing the total exposure of the population. For this reason, IRMM has been developing a reference material for the activity concentration of three radionuclides in bilberry samples. In order to characterise this new material, a CCRI(II) supplementary comparison was organised. The difficulties encountered in this comparison are discussed, in particular the efficiency calibration for volume sources of gamma-ray emitters, and comparison reference values for 137Cs and 40K are calculated.
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Key words
Radioactivity in food,CCRI(II) supplementary comparison,Cs-137 and K-40,Bilberry,Reference material
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