Heavy metal contents and enzymatic activity in soils exposed to the impact of road traffic.

The aim of the research was to evaluate the influence of car traffic on the content of selected heavy metals in soil from a park area, and to define the dependency between their content and enzyme activity. Soil samples were collected from 13 points located along a communication route, each 100 m from the next and 50 m from the border of the road. Soil material was obtained from two depths (0-20 cm and 20-40 cm) and analysed for: pH in HO and in KCl, OC, and texture by laser method.

Impact of highway traffic and the acoustic screen on the content and spatial distribution of heavy metals in soils.

Recent years have witnessed intensification of road traffic and, with it, the amount of substances emitted by vehicles. Such emissions need to be monitored for public health purposes. The aim of this study was to evaluate the impact of the highway traffic on the total content and bioavailability of Zn, Cu, Ni, Cd, Cr and Pb in nearby soils as well as influence of an acoustic screen on spatial distribution of the metals.