1. It also contained polycyclic aromatic hydrocarbons of the kind formed by barbecuing. 2. The chemicals are called polycyclic aromatic hydrocarbons, or PAHs. 3. Crude contains varying concentrations of polycyclic aromatic hydrocarbons considered carcinogenic. 4. Unlike many polycyclic aromatic hydrocarbons, it has no fluorescence. 5. Pyrolysis of coal produces polycyclic aromatic hydrocarbons, which are known carcinogens. 6. They are collectively known as " derivatives of polycyclic naphthacene carboxamide ". 7. Also, any subgroup of a strongly polycyclic group is strongly polycyclic. 8. Also, any subgroup of a strongly polycyclic group is strongly polycyclic . 9. Novosphingobium indicum hasd the ability to degrade polycyclic aromatic hydrocarbon. 10. The chemicals are technically known as polycyclic aromatic hydrocarbons.
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