Analysis On The Sources And Relevant Of PAHs On Indoor And Out PM_2.5 Of Nanchang City

PAHs is one kind permanent pollutant which has the carcinogenic characteristic. It originates widely, for example: the phytosynthesis, the smoking, the cooking, the combustion of fossil fuel and so on; and at the same time, it can long-stands and transforms in the environment, therefore it has importance effect to the environment and human health. PAHs are easy to be adsorbed on the particles in air, Specially the thin granule whose diameter is smaller than 2.5μm. The understanding of occurrence, sources and fates for PAHs on fine particulate matter is the basis of controlling PAHs pollution efficiently, thus reducing personal intake and protecting human health.In order to reflect the pollute situation of PAHs of Nanchang indoor and outside and the important source comprehensively, Five resident housing sampling point are setted in Bayi squares, the Nanchang second middle school districts, the Rongchang plots, the Luo fair and the Liyuan plot, and the fine particulate matter in ambient air were collected at the beginning of summer of 2008. The collected samples were extracted by Ultrasonic extraction,concentrated by Kuderna-Danish concentractor and blowing high purity nitrogen in sequence,then High Performance Liquid Chromatography (HPLC) were used to analyze the pretreated samples.Based on the determined data at various sampling areas, the main sources of PAHs on fine particulate matter (PM_2.5) of NanChang indoor and outside were estimated by Factor Analysis Method.