![]() Polycyclic aromatic hydrocarbons (PAHs) are organic compounds consisting of carbon and hydrogen atoms. Chemically the PAHs comprise two or more aromatic rings bonded in linear, cluster, or angular arrangements, resulting in a wide diversity of physical, chemical, and toxicological properties. PAHs are ubiquitous and can contaminate soil, air, sediments, and water and are resistant to environmental degradation. ![]() These compounds are found in fossil fuel sources and manmade chemicals and are derived from the incomplete combustion of organic matter used for human activities (such as vehicle emissions, rubber, plastics, and cigarettes). PAHs have toxic effects because of their chemical structure and act as a carcinogen or endocrine disrupter. ![]() Due to their toxicity, they are monitored in the environment with strict regulations. One of the most common regulations followed for the analysis of PAHs is EPA Method 8270E. Analytical laboratories following this method face several challenges.
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