The dependence of the 137Cs on the parameters of a soil solution

Different kinds of rapidly maturing plants were grown simultaneously at experimental sites under natural conditions at the Chernobyl Exclusion Zone. The content of 137Cs in a plant and in the corresponding soil solution and the content of the soil solution in soil were measured. We have first established that, for all investigated plants and experimental sites, the 137Cs plant uptake is approximately proportional to the concentration of dissolved 137Cs in the soil - to the product of the 137Cs content in the soil solution and the content of the soil solution per unit volume of soil