Gasi Wopangidwa ndi Kutentha Asphalt

Asphalt yotentha imatulutsa mpweya wopangidwa makamaka ndi ma hydrocarbon osiyanasiyana, makamaka polycyclic onunkhira hydrocarbons.

Mapangidwe a asphalt amaphatikizapo asphaltenes, utomoni, ma hydrocarboni odzaza ndi onunkhira.

Chifukwa mkulu-kutentha mankhwala kapena yaitali evaporation zachilengedwe, mafuta, ndi malasha phula asphalt, Kutentha kumapanga tinthu tating'onoting'ono ta maselo, makamaka ma hydrocarbon atalitali komanso onunkhira, mamolekyu ofunika kwambiri monga naphthalene, anthracene, phenanthrene, ndi benzo[a]pyrene.

Ma Polycyclic onunkhira a hydrocarbons ndiwowopsa kwambiri ndipo ena amadziwika kuti ndi ma carcinogens.