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POLYCYCLIC AROMATIC HYDROCARBONS (PAHs)

imagesPAHs are the first group of substances with proven carcinogenic activity, since there are modern toxicology studies, i.e. from the early 20th century. At first, they were isolated from coal tar, which is why the first alarming signals come from England. They are multi-core, heavy compounds, as the following PAHs are monitored: benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(g, h, i)perylene, indeno(1,2,3-cd)pyrene, a-metilnaftalen, acenaphthene, atsenaftilen, anthracene, benzo(a)anthracene, hriz, dibenzo(a, h)anthracene, fluoranthene, fluorene, naphthalene, phenanthrene, pyrene, 2-metilnaftalen. It is known that the main sources of PAHs contamination are coals and their use for heating and other energy projects. PAHs produce during the combustion of municipal solid waste and also industrial waste – most by combustion and processing of tires. They obtain in some technologies for food production, such as smoking. As a global pollutant, they are monitored in soil and water, having priority risk areas. In food, it is good to have clarity about their contents and mostly in smoked foods. They are analyzed by several methods, but the most sensitive is the liquid chromatography equipped with fluorescent detector, sometimes using gas chromatography with mass-spectrometric detector or flame ionization detector.

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