ORIGINAL RESEARCH
Potassium-40 and Cesium-137 in the Surface
Layers of Arable Soils and Food Supplies
Elżbieta Królak1, Jadwiga Karwowska2
1University of Podlasie, Institute of Biology, Prusa 12, 08-110 Siedlce, Poland
2Regional Disease Control Centre, Poniatowskiego 31, 08-110 Siedlce, Poland
2Regional Disease Control Centre, Poniatowskiego 31, 08-110 Siedlce, Poland
Pol. J. Environ. Stud. 2010;19(3):599–604
KEYWORDS
ABSTRACT
The concentrations of 137Cs and potassium in the surface layers of arable soils were analyzed in the
selected region of Eastern Poland approximately 20 years after the Chernobyl power plant accident.
Additionally, the occurrence of the elements in soil in the forms available for plants was determined. In relation
to the total concentrations of 137Cs and 40K in the soil, cesium is found in larger quantities in the forms
available for plants than potassium. Radiation doses through ingestion were estimated on the basis of 137Cs and 40K measurements in food samples. It was proved that during the period 1998-2007 the annual average intake
of radiocesium per person exceeded twofold the national average, whereas the intake of potassium satisfied
the body’s daily demand for this element.
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