Polycyclic aromatic hydrocarbons are a natural component of mineral oil and tar. They also arise during Incomplete combustion and industrial processes. The group includes several hundred compounds, many of them classified as carcinogenic. In the 1980s, the EPA commission (US Environmental Protection Agency) established 16 substances as compounds which are now often analysed as representative of the whole group. The PAHs appear almost worldwide and they are persistent, so they can be detected over a long period of time. They can get Into the ground through combustion residues, old landfills, industrial uses and similar things.
|amount of sample||100 g|