ECOLOGICAL-ANALYTICAL ASSESSMENT OF HEAVY METAL CONTAMINATION OF SOIL COVER OF THE CITIES OF ARKHANGELSK INDUSTRIAL AGGLOMERATION
The comparative analysis of the gross content of heavy metals (I-III classes of danger in the soils of the cities of Arkhangelsk industrial agglomeration, identified a list of these metals as a major pollutants cities agglomeration, installed the possible reasons for their retention in soils. Estimation of the degree of soil contamination of various functional zones of Arkhangelsk, Novodvinsk and Severodvinsk these pollutants. It is established that, for soils of the cities of Arkhangelsk industrial agglomeration characterized complex ore soil pollution. The main pollutants Novodvinsk are Zn and Ni; Severodvinsk – Pb, Ni, Zn, Cu and Cd; Arkhangelsk – Pb, Zn, Hg, Cu and Mn. The degree of soil pollution cities of Arkhangelsk industrial agglomeration TM is due to both a period of technological exploitation of the territory, so and granulometric composition of them. Using the sum of man-caused pollution, carried out environmental zoning of the territory of the cities in the category of pollution of soils with heavy metals and revealed that soil Novodvinsk and Severodvinsk have the permissible degree of pollution TM (according to the gross content), and soil Arkhangelsk – moderately dangerous.