[Spatial distribution and environmental risk of As and Pb from street dust in non-ferrous metals smelting areas].

ArcGIS analysis was applied to study the content level and the spatial distribution characteristics of As and Pb in street dust of Huludao city. Geoaccumulation Indexes and Potential Ecological Risk Index technique were applied to assess the ecological risk of As and Ph. The average contents of As and Pb were 33.10 mg x kg(-1) and 533.2 mg x kg(-1), which was 4 and 25 times as high as the background value respectively. The trends for Pb and As were similar with higher concentrations near Huludao Zinc Plant (HZP). The ecological risk of As and Pb contamination in street dust were serious, and the accumulation of Pb in street dust was higher than the As.