Plakhov G.A., Bezuglova O.S., Tagiverdiev S.S., Gorbov S.N..

Interrelation of Lead, Zinc, and Copper with Organic Matter and Carbonates in Urban Soils (A Case Study of Rostov-on-Don)

The article is devoted to the study of heavy metals content in the soils of Rostov-on-Don. Soil samples were collected from full-profile transects located in different areas of the city and suburbs of Rostov-on-Don. The group of anthropogenically altered soils included Urbic Technosol urbanstratozems and replantozems, as well as urbanized chernozems Calcic Chernozems (Technic). Natural soils of recreational areas are represented by migration-segregation chernozems Calcic Chernozems (Pachic). The study was carried out using atomic absorption spectrometry and X-ray fluorescence analysis to determine the content of metals, carbon content was determined on a TOC analyzer. Graphical analysis was used to identify the correlations. The main purpose of the study was to identify the relationship between the content of metals and carbon in the soil profile. It was shown that the presence of carbonate barrier in deep soil horizons (BC and C) in chernozems and in surface layers of urban stratozems under anthropogenic pollution influenced the mobility of metals. The accumulation of organic carbon in humus-accumulative horizons promotes the growth of exchangeable form of zinc, lead, and copper in the total content of these metals.

Keywords: URBAN SOIL, HEAVY METALS, URBANSTRATOZEMS, REPLANTOZEMS, CHERNOZEMS, ANTHROPOGENIC POLLUTION, CARBON