Pollution characteristics and source analysis of polycyclic aromatic hydrocarbons in soil of coal fired power plant

In this study, 16 kinds of priority PAHs listed by US Environmental Protection Agency
(USEPA) were selected as research objects.Ten soil samples collected from a coal fired power plant in southwest of China were analyzed by gas chromatography-mass spectrometry (CC-MS) to determine the contents of PAHs.Based on the analysis of the characteristics of PAHs and its variation , the source of soil PAHs in coal fired power plant was determined by the method of pollutant source analysis. 'The results showed that 16 PAHs were detected in the soil of the plant , and the contents of 16 PAHs were 4706~12 175 ug/kg.Average content of PAHs were 7 436 ug/kg.Compared with other regions in China and abroad , the PAHs in the soil of the power plant are seriously polluted.The content of PAHs