Исследование характера загрязнения почвы цинком и кадмием вдоль автомобильных дорог города Волжского

Abstract

The character of zinc and cadmium pollution of the roadside soil of the city of Volzhsky is analyzed. Exceedings of approximately permissible concentrations of total forms of zinc and cadmium in the soil were not found. The concentration of zinc in the soil near the highways of the city of Volzhsky does not correlate with the concentration of cadmium. The influence of the intensity and structure of the traffic flow, the level of landscaping and the age of development on the spatial dynamics of the concentrations of zinc and cadmium in the soil was studied. Near highways with heavy traffic, the concentration of zinc in the soil is greater than on less busy roads. The concentration of cadmium in the soil is higher along the roads, where the role of trucks and buses in the structure of the traffic flow is high. Roadside areas with a higher level of greenery are characterized by lower concentrations of zinc in the soil. There was no statistically significant relationship between the concentration of cadmium in the soil and the level of landscaping of roadside areas. No relationship was found between the age of development and the concentrations of zinc and cadmium in the roadside soil. The concentration of heavy metals in soil near highways seems to depend on many factors. The influence of some factors overlaps with the influence of others, which complicates the identification of clear relationships.