Occurrence And Source Apportionment Of Persistent Organic Pollutants In The Soil Of Huainan Mining Area

Huainan Panji Yangzhuang subsidence area where the region is the largest coal mine in Huainan collection base, Yangzhuang subsidence area subsidence area in Huainan largest and most representative, the paper analyzed Yangzhuang subsidence zone in surface sediments in the summer, the analysis of mining subsidence area in surface sediments POPs substances Distribution and sources of pollution, subsidence area to determine the level of POPs contaminated sediments and provide theoretical data for the development of POPs pollution control policies.Detection of subsidence area major POPs substances seen that he loved contaminated water PAHs and PCBs in sediments twist average at a lower level, where the average concentration of PAHs reached205.38ng· g-1/dw, an average of PCBs concentration of4.01ng· g-1/dw, characterized by the composition of the two substances were analyzed and found to exhibit the highest composition characteristics of PAHs content Philippines, accounting for24%of total PAHs substances and4ring PAHs>2+3rings PAHs> Distribution5+6ring PAHs substances causing PAHs composition characteristics of this feature is mainly due to the composition of energy caused by the subsidence area; PCBs composed mainly of three chlorinated PCBs and chlorinated PCBs mainly five, including three chlorinated PCBs the highest level, contributing about60%PCBs substance higher contribution rate five higher chlorinated PCBs content reached about30%, which is consistent with domestic production PCBs material type.After the collapse of the main sources of POPs substances region analysis found that PAHs pollution mainly from combustion sources, combustion sources contributed70.28%of the PAHs pollution, petroleum sources contributed only18.7%of the pollution, the collapse zone around a lot of coal and coal-fired power Enterprise is the main source of pollution caused by POPs subsidence area; PCBs pollution sources mainly low polychlorinated biphenyls (contribution rate of60%) result of the role, which was mainly due to the low atmospheric PCBs cause of long-distance transport.