TRANSFORMATION OF COMPOUNDS OF HEAVY METALS IN SOILS ARKHANGELSK
A comparative analysis of the balance firmly and loosely bound to soil components compounds of zinc and copper in the major functional areas of Arkhangelsk revealed ambiguous modification ratio of mobile forms of transformation in the composition of the investigated TM loosely bound compounds at technogenic soil pollution in the urban environment. Ascertained that the mobility of the natural soil in the Zn is higher than Cu, but with an increase in the mobility of zinc technogenic load is reduced, and copper, on the contrary, increased. This is due to the fact that in urban soils appear compound Cu, loosely associated with carbonates, almost absent in the natural soil, the share exchange and reduced the proportion of residual forms. In zinc, on the contrary, increases the proportion of specifically adsorbed shapes and forms related to soil organic matter. In general, with increasing total content of TM in the surface layer of urban soils Arkhangelsk occurs proportional increase in all forms of transformation, while dramatically decreasing the share of the mobile forms of heavy metals exchange, available to plants.