Study on source of polycyclic aromatic hydrocarbons and its behavior in drinking water treatment process in a city of north China
北方某城市饮用水中多环芳烃的来源及其在水处理过程中的行为研究

Water samples were collected from the water supply systems of an industrial city of north China.Polycyclic aromatic hydrocarbons(PAHs) residues were assessed by solid phase extraction combined with GC/MS analysis.The results showed that although the PAH concentrations are relative higher than other cities,they do not exceed the relative limit of urban water supply standards(CJ/T206-2005).The nearer reservoir is polluted by the PAHs from combustion and becomes the main pollution source.The total removal efficiency for PAHs of conventional oagulate-sand filtration treatment process is 55.9%.