Road dust trace elements contamination, sources, dispersed composition, and human health risk in Chelyabinsk, Russia.

There are many sources of urban road dust, such as soil dispersal, emissions of industrial enterprises and thermal power plants, road traffic-related processes. Chelyabinsk was selected as a typical Russian industrial city. This work was the first pollution study of road dust in Chelyabinsk.

Extremely high concentrations of zinc in birch tree leaves collected in Chelyabinsk, Russia.

Zinc is an essential trace element and a vital microelement for human health. Zinc can be toxic when exposures exceed physiological needs. Toxic effects in humans are most evident from inhalation exposure to high concentrations of Zn compounds.