1. Pine tar consists primarily of aromatic hydrocarbons , tar acids and tar bases. 2. It also contained polycyclic aromatic hydrocarbons of the kind formed by barbecuing. 3. "' Phenanthrenedione "'is a cytotoxic derivative of the polycyclic aromatic hydrocarbon phenanthrene. 4. Other contamination includes phthalates, lead, polycyclic aromatic hydrocarbons , DDT and heavy metals. 5. Polycyclic aromatic hydrocarbons ( PAH ), for example, are genotoxic via epoxidation. 6. Benzene is an aromatic hydrocarbon found in gasoline, diesel and other fuels. 7. However, burning at low temperatures also causes increased polycyclic aromatic hydrocarbon emissions. 8. It was only in the mid-1950s that chloracne was associated with aromatic hydrocarbons . 9. Benzene is an aromatic hydrocarbon found in gasoline and other fuels. 10. Pyrolysis of coal produces polycyclic aromatic hydrocarbons , which are known carcinogens.
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