  A method is described of radiocesium fixation in soils contaminated by this
radionuclide. To immobilize radiocesium, the soil surface is treated with
aqueous hexacyanoferrate solution of alkaline metals. It has been
experimentally shown that application of K4 [Fe(CN)6]{\bullet}3H2O at a rate of
1,3g/kg soil reduces the fraction of exchangeable 137Cs 100-fold (100 times).
The method is effective for the plots where contamination is concentrated in
the top 1 - 2 cm soil layer.
