Characteristics Of Heavy Metals Pollution In Roadside Dusts In Chang'An Street Of Beijing City

A study was conducted to determine the current status of the heavy metals in roadside dusts collected from Chang'an Street in Beijing, China. Ten sampling sites were selected and analyzed to determine the concentration and pollution assessment of heavy metals in roadside dusts. The results showed that the concentrations of Cr, Cu, Zn, Cd and Pb were higher than the local soil background values, indicating that the heavy metals pollution may come from anthropogenic input. The assessment by Geoaccumulation Index (I-geo) indicated that Cr and Ni were at the unpolluted level, the other elements were at the uncontaminated to moderately contaminated level. The pollution level of the heavy metals was: Ni < Cr < Pb < Cu < Zn < Cd.