| 16 polycyclic aromatic hydrocarbons (PAHs) in farmland soil and their potential pollution sources such as coal combustion dust, traffic dust and vehicle exhaust fume from A, B two sites were investigated. The results showed that the ∑PAHs in the farmland soil samples from A,B two sites were in the range of 290 ng/g～2.53×103 ng/g and 564 ng/g～5.50×103 ng/g, respectively, indicating the pollution was from moderate to serious. The pollution level in the surrounding soil trended to increase gradually from industry park, chemical enterprise to oil deposit. The concentration of ∑PAHs from A,B two sites arranged in the order of exhaust fume＞traffic dust＞coal combustion dust＞soil, and vehicle exhaust fume＞traffic dust＞soil＞coal combustion dust, respectively. According to sources apportionment research, these PAHs in the farmland soil were originated from petroleum and the combustion of petroleum and its refined products, wood, coal. |
