Influence of Anthropogenic Pollution on Mobility of Heavy Metals in Soils of Low-Industrial Cities in the Amur Region

The accumulation and distribution of heavy metals (Cu, Zn, Mn, Cr, Ni, Co, Pb, and Cd) in soils of the largest cities in the Amur region, such as Blagoveshchensk, Belogorsk, and Svobodny, are studied. It is found that Zn, Pb, Mn, and Cu are the main technogenic pollutants of urban soils in these cit...

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Bibliographic Details
Published in:Doklady earth sciences 2022-12, Vol.507 (Suppl 1), p.S111-S119
Main Authors: Borodina, N. A., Radomskaya, V. I.
Format: Article
Language:English
Subjects:
Anthropogenic factors
Cadmium
Chromium
Cities
Cobalt
Copper
Distribution
Earth and Environmental Science
Earth Sciences
Environmental aspects
Food chains
Geoecology
Heavy metals
Human influences
Hydroxides
Iron
Lead
Manganese
Metals
Mobility
Nickel
Organic matter
Oxides
Pollution
Risk levels
Soil
Soil pollution
Soils
Zinc
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Summary:The accumulation and distribution of heavy metals (Cu, Zn, Mn, Cr, Ni, Co, Pb, and Cd) in soils of the largest cities in the Amur region, such as Blagoveshchensk, Belogorsk, and Svobodny, are studied. It is found that Zn, Pb, Mn, and Cu are the main technogenic pollutants of urban soils in these cities. The estimation of the fractional distribution of heavy metals (HMs) has shown that the metals found in urban soils accumulate mainly in the following fractions: Cu in the fraction associated with organic matter; Mn in the fraction associated with Fe and Mn oxides and hydroxides; Zn and Cd in the specifically adsorbed fraction associated with Fe and Mn oxides and hydroxides; Ni, Co, Pb, and Cr in the fraction associated with Fe and Mn oxides and hydroxides and organic matter. The proportion of HM mobile forms (oxides associated with organic matter and specifically adsorbed) grows with an increase in the technogenic load. Compared to the background area, the potential mobility of heavy metals increases in urban soils. Among the elements studied, Zn, Cd, and Mn with the potential mobility corresponding to a high level of risk pose the greatest danger. The moderate risk of input into food chains is typical of Pb, Ni, and Co.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X22601420