Analytical Research on Pollution Sources of PAHs in the Soil Based on Principal Component Analysis(PCA)

The pollution issue of PAHs in the soil of cities and outskirts gets more and more attention. The research is based on the sixteen kind of target compounds of PAHs controlled preferentially by EPA in the ten soil sampling points of fields in five towns of Yong Qing area in Lang Fang city, Hebei province. It applys PCA to recognize main sources of PAHs in the soil. The results show that the region has four primary sources, civilian combustion and traffic pollution sources, industrial coal and oil pollution sources, gasoline engine pollution sources and coking of oil pollution sources. The pollution of Langfang area mainly stems from the compound PAHs pollution of oil sources and coal tar. The levels of pollution of PAHs in the soil is: Bie Guzhuang town > Hou Yi town > Yong Qing town > Han Cun town > Li Lancheng town.