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2020, № 3 (41) |
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ECOLOGY
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Stepanova M.V., Ostapenko V.A. |
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The content of heavy metals in the snow cover for various functional purposes |
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Snow cover is a depositing medium, the study of which provides information on industrial pollution in the winter. The study of snow was carried out in 2018–2020 using atomic absorption mass spectrometry with a KVANT-2AT spectrometer in territories with different technogenic loads in the Central Federal District. The content of water-soluble mobile forms of metals (zinc, copper, cadmium, lead, iron) was analyzed. For all considered regions, in terms of the average content of trace elements in the liquid phase of snow, the studied elements form the following decreasing series: Fe> Zn> Cu> Pb> Cd. As a result of studies, it was found that the highest level of pollution of the snow cover with chemical elements (zinc, copper, iron, cadmium, lead) is observed in the metropolis, the lowest in the textile regional center. According to the indicator of total snow pollution by chemicals, the studied territories of the metropolis are characterized by high, dangerous, Yaroslavl region - medium, moderately dangerous, regional textile center - low pollution. A significant increase was found in the content of lead in the roadside zone in melt snow water, zinc and iron in the residential area. The complexes of mutual cumulation of metals and the synergy of the accumulation of mobile forms in the snow are revealed. The pollution of the depositing environment is associated with the technogenic load of these areas and the cities under study
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