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The chemical composition of 122 samples of snow cover (collected during 2018-2020) was measured for the representative points of the Almaty agglomeration (AA). Mean values of acidity show the absence of large-scale processes of acidification of snowfall over the study area. The analysis of the temporal variations of these parameters indicates their relative stability. The high values of suspended solids are characteristic of the mountainous territory, the Almaty city, including in the area of large highways. The c...

The article presents the results of the studies (in 2018 and 2019) of the level of accumulation of polychlorinated biphenyls (PCBs) ? the most toxic compounds from the number of persistent organic pollutants (POPs) in the snow cover (SC) of the territory of Almaty agglomeration, area of about 940 thousand hectares. The contamination of PCB SC has been established, especially in urban areas and adjacent to large industrial hubs. In snow samples up to 29 individual PCB congeners are identified, which is an indicator...

The results of the field studies of heavy metals in snow cover presented in this work for urbanized territory of Almaty agglomeration first time. Seventy-five samples were collected during the period from February 5 to March 10, 2018 at 25 permanent monitoring sites. Samples of snow were analyzed for heavy metals (Cu, Zn, Pb, Cd) using ??S-7000 (Shimadzu). The obtained quantitative data were used to assess the nature of the spatial distribution of metals in the snow cover of the study area and based on them were p...