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  • Author: Wiesław Szulc x
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Artur Komorowski and Wiesław Szulc

Abstract

This article presents the results of a study on the content of selected trace metals (Pb, Zn, Cu, Cd) in soils near the main traffic routes of the Warsaw agglomeration. The aim of the study was to determine the extent of soil contamination with trace metals at different distances from the road (by the side the road and 50 meters away from the road). In the soil 50 m away from the road in Łomianki ‘low contamination’ was found for zinc and ‘elevated content’ for copper according to the IUNG guidelines, but the amounts of the trace elements were not found to exceed the permissible levels as specified in the Regulation of the Minister for the Environment of 1 September 2016.

Open access

Beata Rutkowska and Wiesław Szulc

Abstract

The changes of the concentration of Cu and Zn in the soil solution and the percentage of particular forms of these elements in the soil solution were investigated in the long-term fertilization experiment. The soil solution was obtained following the vacuum displacement method. Speciation of copper and zinc ions was determined with MINTEQA2 for Windows software. The results of the investigation indicated that exclusive mineral fertilization (NPK) caused an increase of Cu and Zn concentration in the soil solution. Organic fertilization (FYM) resulted in a decrease of Cu and an increase of Zn concentration in the soil solution. Liming limited mobility of both analysed elements. The results of speciation analysis showed that regardless of the fertilization mode, the organo-mineral complexes are the main form of Cu occurring in soil solution. The percentage of Cu-DOC complexes ranges from 76.5 to 85.2% of the total concentration of Cu in the soil solution. The particular forms of copper can be sorted depending on the percentage in the soil solution as follows: Cu-DOC>Cu2+>Cu-CO3. The main form of Zn in the soil solution are active Zn2+ ions. The share of Zn2+ in total zinc concentration in the soil solution ranged from 76.9% to 86.4%. Forms of zinc in the soil solution can be arranged with regard to their percentage as follows: Zn2+>Zn-DOC>ZnCl+>ZnHCO3 +.

Open access

Aleksandra Kowalczyk and Wiesław Szulc

Abstract

This work presents the results of an analysis of concentration levels of selected trace metals (Pb, Zn, Cu, Cd) in plants and soil near the main roads of the Warsaw agglomeration. The aim of the study was to assess the degree of contamination by selected trace elements of plants growing at different distances from the road (directly at the roadside and 50 meters away from the road) and to examine the relationship between the concentration of the tested parameters in the soil and their content in the plant. It was found that the lack of clear differentiation in the levels of all heavy metals in plants depending on the distance from the road was associated with the possibility of considerable pollutant migration. In addition, it was found that dandelion usually reveals higher concentrations of heavy metals than meadow-grass.