тяжелые металлы

A microbiological indication of anthropogenic disturbed soils from the city Mednogorsk was carried out based on the evaluation of the number of heterotrophic, iron- and manganese-oxidizing bacteria. This study states a relationship between high levels of magnetism in these soil samples and high content of iron-oxidizing bacteria, indicating the possible use of this group of microorganism for monitoring heavy metal contaminated soils.

Researches of snow cover in the city of Saratov. The chemical composition of the melt water and the insoluble residue. Based on the data conclusions about the ecological state of the snow cover.

The soil cover in the territory of the recreational zone «City Park» located in the central part of the Volsk town of the Saratov region is investigated. The assessment of a current sanitary and hygienic and ecological and geochemical state of soils is executed by results of the analysis of concentration of mobile forms of heavy metals. Excess of threshold limit values on nickel, copper and zinc is established.

The role of agricultural plants in the migration of Cd, Pb, Ni, and As in the soil-plant system and their contribution to decreasing soil metal toxicosis were studied. The influence of heavy metals and arsenic on the enzyme activity of southern chernozem and the restoration of soil biological activity during the elimination of these elements from planted soil were investigated. 

The soil cover on the territory of the Trofimov oil field located within the city of Saratov has been studied. Based on the results of analysis of concentrations of mobile forms of heavy metals, an assessment of the modern sanitary-hygienic and ecological-geochemical state of soils was performed. Significant correlations between different metals have been found. An excess of the maximum permissible concentrations for nickel and copper has been established.

The concentrations of mobile forms of heavy metals (copper, nickel, zinc, copper, lead and chromium) in the soils of the town of Volsk (Saratov region) were determined. It has been established that the concentration of heavy metals (nickel, copper, lead and zinc) exceeds the maximum permissible concentration. 94% of the selected samples are related to the permissible level of pollution, 4% to the moderate level and 2% to the dangerous level.

The soil cover in the territory of the specially protected natural area «Botanical Garden of Saratov State University» is investigated. Based on the analysis of the concentration of mobile forms of heavy metals, the assessment of the current sanitary-hygienic and ecological-geochemical state of soils has been carried out. The excess of the maximum allowable concentration for nickel, copper and zinc has been established. 

The soil cover in the territory of the large recreational zone «Victory Park», which performs environmental, memorial and educational functions, was studied. According to the analysis results of mobile forms of heavy metals concentrations the assessment of the current sanitaryhygienic and ecologic-geochemical condition of soils was carried out. An excess of the maximum permissible concentrations in most of the samples for nickel, lead, and copper was found.