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• 10:11, 28 July 2023 USEV talk contribs created page Polycyclic aromatic hydrocarbons (Created page with "=== '''Definition''' === Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental pollutants formed in the combustion process of carbonaceous materials at high temperature. They are a large group of organic compounds with two or more fused aromatic rings. Low molecular weight PAHs (two and three rings) are found in the atmosphere predominantly in the vapour phase, while multi-ring PAHs (five or more rings) are largely particle bound and are considered very d...")