Determination and Assessment of Polycyclic Aromatic Hydrocarbons in Soil Nearby Oil Waste Disposal Site
By using microwave extraction,a GC /MS method was developed for the determination of polycyclic aromatic hydrocarbons(PAHs) content in soil which is around the discharge ditch of oily wastewater,and a correlation analysis of the content of organic matter in soil was carried out. The results showed that PAHs in the surface soil pollution were mainly from 2 to 4 rings of low molecular PAHs,and the PAHs with high molecular were not detected. Each sampling point belongs to slight or moderate pollution and the overall assessment is moderate pollution,which is middle and low lever in comparison with soil data of central regions. The origin may be the low molecular PAHs of oil pollution along with the atmospheric transmission,but it cannot be completely excluded the possibility of fuel combustion pollution. No obvious correlation was found between the content of polycyclic aromatic hydrocarbons and organic matter.