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Polycyclic aromatic hydrocarbons (PAHs) are present in ambient air with their nitro-derivatives and hundreds of other organic compounds. PAHs and nitro-PAHs originate from Diesel and gasoline exhaust emission, and other sources of fuels combustion. These compounds are responsible for mutagenic activation of ambient air. Concentrations of PAHs, nitro-PAHs and dinitro-PAHs in total suspended particulate...
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