GEOCHEMICAL ANOMALIES OF METALS AND METALLOIDS IN LANDSCAPE COMPONENTS OF THE EASTERN PART OF MOSCOW: PARAGENESES OF CHEMICAL ELEMENTS AND TYPOLOGY

Ecological-geochemical assessment of anomalies of different metals and metalloids in landscapes of the southern part of the Eastern District of Moscow was done through comparison of technogenic geochemical specialization of different environments (snow cover, road dust, surface horizons of urban soils, leaves of maple Acer platanoides and dandelionTaraxacum officinale). In order to estimate the contribution of landscape components to the overall geochemical anomaly of a certain area, the authors suggest producing ecological-geochemical portraits that represent sums of enrichment factors for pollutants in different components of an urban landscape. In the eastern part ofMoscow, Cd, As, Pb, Mo, and Sb are the major pollutants. Atmogeochemical (Sb, Mo, Sn, Ag, W, As), pedogeochemical (Sb, Cd, Zn, Pb, Fe, As) and hybrid (Cd, Sb, Pb, Mo) parageneses were revealed in transit and depositional environments. Using a system of integrated indicators, typology of technogenic geochemical anomalies was proposed. It includes progressive, neoprogressive, bioprogressive, stable, regressive, relict and bioaccumulative anomalies. Stable anomalies of pollutants with the least prosperous environmental situation are located in the northwestern, northeastern, central and southeastern parts of the area close to major roads and industrial zones.

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