Determination of the parameters of mobility for potassium dichromate in contaminated soil layer

V. G. Petrov, M. A. Shumilova, N. V. Novikova

Institute of Mechanics, Ural Branch of the Russian Academy of Sciences, Izhevsk, Russia

Abstract: The most dangerous are wastes containing hexavalent chromium, if contaminated soil. MPC values for soil contamination $\mathrm{Cr (6+)}$ is significantly lower than the MPC for the compounds of other heavy metals. At the experimental stand, modeling the influence of precipitation in the form of rain on the surface layer of soil, the study of mobility in soil hexavalent chromium in the form of potassium dichromate as a pollutant. Estimated the high mobility of the pollutant in the surface soil layer in comparison with salts of two - and three - valence metals, that should be considered when monitoring the impact of industrial plants. In the study, were obtained values of the observed rate constants of allocation of $\mathrm{Cr (6+)}$ from contaminated soil layer- $\kappa_0$, and the half-life - Т$_{0.5}$ of some types of soils typical of the Udmurt Republic.

A comparison of methods for studying the mobility of contaminants in laboratory and field conditions and found that the methods are in satisfactory agreement with each other.

Keywords: soil contamination, compounds of hexavalent chromium, the parameters of mobility.

UDC: 631.4:502.65