Ecological and geochemical study of the state of soil deposits in the impact areas of municipal solid waste landfills

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Summary As a result of the analytical research and result of the previous stages of study it was found the significant contamination of the soil layer by the heavy metals (HMs) within the Kyiv’s Landfill area No 5 for the municipal solid waste (MSW) disposal and the surrounding areas to the north-east and north-west. It was revealed also the negative its effect on the contents of these pollutants in the soil of adjacent buffer zone. This is a result of almost 34 years of the operation of the MSW disposal facility, when there were operating troubles. In order to measure the concentrations of the chemical elements in the soil samples such key methods as the atomic emission spectroscopy (AES) and inductively coupled mass spectrometry (ICP-MS) are used. So, soil deposits of the Landfill have get the maximum exceed of background contents for cooper, lead, nickel, and tin by from several to ten times, at the same time, beyond its contour – by 2–3 times. The negative changes of physical-chemical properties of soils of the humus horizon is revealed by the comparison with the proper indications for the soil samples collected in the sites adjacent to the Landfill and directly on its territory. The buffer coefficient of soil of this horizon is twice as lower for the technogenic polluted soils within the MSW disposal facility than for the background sites. The contents of mobile forms for the HMs in the soil formations of the Landfill No 5 in the comparison with the background values increase 2 times for cooper and zinc, as well 8 times for lead.