Research of Road Dust on Human Health Risk Assessment of Heavy Metals in Relocated Industrial Area, Tiexi District, Shenyang City, China

摘要

Particulates that are deposited on a road,usually called ‘road sediments’,‘road deposited sediments’,‘street dusts’ or ‘road dusts’,are significant pollutants in the urban environment because they contain high levels of toxic metals and organic contaminants such as Arsenic (As)and polycyclic aromatic hydrocarbons (PAH).Health hazards of road dust such as genotoxicity,estrogen-like cell growth activity,dioxin-like activity and allergens have been reported.In addition to these risks,it is well known that road dust are sinks and sources of metals or other contaminants in an urban environment.Road dust consists of both natural and anthropogenic particles.Natural particles derive primarily from soil minerals,while anthropogenic particles derive from road construction materials (asphalt,concrete and road paint),automobiles (tire dust,brake dust,body rust and tail pipe exhaust),industrial inputs or atmospheric depositions.