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For years, the Illinois Institute of Technology (IIT) at Chicago has served as the only urban sampling site for the Integrated Atmospheric Deposition Network. Atmospheric concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides, and polycyclic aromatic hydrocarbons (PAH) in the vapor phase have been measured at this site every 12 days since 1993. These data have been used as representative...
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