Radioactive caesium (RCs; 134,137Cs) has been released to the environment during nuclear weapon testing and nuclear accidents (Chernobyl and Fukushima). This release had led to considerable contamination of the environment including soils and vegetation. Intake of RCs into human body via ingestion of contaminated foodstuffs could have detrimental effects on human health. To estimate the dose impact, reliable quantification of the of soil and crop contamination with RCs is required. It has been demonstrated that the radiocesium interception potential is a good indicator for the bioavailability of radiocesium in soils.