This study estimated the health risk of heavy metals in particulate matter (PM)
2. 5in a Gwangyang industrial complex. The PM
2. 5containing heavy metal was collected from January to November, 2008 using a denuder air sampler and by IC (Ion Chromatograph). The risk assessment was performed in a four-step process; hazard identification, exposure assessment, dose-response assessment and risk characterization. In the hazard identification process, Cr 6 + , Ni, As, and Pb were categorized as human carcinogens and probable human carcinogens, while Ti, Mn, Se, P, Cr , and the total excess cancer risk posed by carcinogen heavy metals in PM . It was also determined that the total hazard index by CTE of non-carcinogen heavy metals in PM
2. 5was <1. Taken together, these results indicate a high cancer risk associated whit inhalation of heavy metal-containing PM 2 . 5in industrial areas.
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