Model study of gley formation process on migration of radionuclides in water-logged soils

Using model system conjugated washing out is studied of iron and other macro- and microelements, radionuclides among them, from sample of contaminated bottom land soils in statis-washing regime of water-logging. As a result of anaerobic bacteria activity redox potential Eh decreases up to +140 mV carrying out to partial reduction of iron and dissolution of iron hydroxide organic mineral films of soil. Washing out of stable elements and radionuclides by water takes place in agreement with iron washout. To activate the reducing iron mobilization in model system as liquid phase 0.4 % solution of ascorbic acid is used. In such conditions washout of stable elements and radionuclides increases significantly, while the maximal effects is observed for plutonium