Determination of radon concentration in soil, indoors and classification of building's territory

The technique of an application of the exposure adsorption method (EAM) of radon concentration in activated carbon is presented for to estimate the radon emanation from soil and to determine a multiplicity of decreasing of radon concentration in indoors relatively it's availability in soil. There are given the results of the definition of radon volume activity (RVA) in comparison with other ones - moment absorption and filtration methods. It is illustratively shown that technique is applied to reveal some tectonic breaks and anomalies of radon emanation. It is suggested to divided areas of buildings into four categories according to the degree of the radon emanation. 6 refs., 3 tabs., 4 figs