黄浦江表层沉积物中多环芳烃的分布特征及来源

DISTRIBUTION AND SOURCE OF POLYCYCLIC AROMATIC HYDROCARBONS(PAHs) IN SURFACE SEDIMENT OF HUANGPU RIVER

利用GC/MS对黄浦江8个断面表层沉积物中的16种多环芳烃(PAHs)进行了分析.沉积物中PAHs总量为0.244—2.805μg·g-1,从上游到下游呈升高趋势,工业污染和城市活动是黄浦江水环境中多环芳烃的重要来源.苏州河对黄浦江下游水环境中的多环芳烃具有较大的输入贡献.特征化合物指数分析表明,黄浦江沉积物中的多环芳烃主要来自于化石燃料的不完全燃烧,中下游显示一定的混合来源特征.相关性分析表明,总有机碳是影响沉积物中多环芳烃分布的重要因素.

16 polycyclic aromatic hydrocarbons（PAHs） in the surface sediments of Huangpu River in China were determined by GC/MS based on USEPA 8270C method. The total concentration of PAHs in sediments was 0. 244-2. 8051μg· g^-1. PAHs content increasing from upper to downstream Huangpu river implicated that industrial pollutant and city activity were the important source of PAHs in Huangpu river. Also, inflow of Suzhou river offered lots of PAHs to downstream Huangpu river. According to the indicators such as phenan- threne/anthracene （Ph/An）, fluoranthene/pyrene （F1/Py）, etc., the dominated source of PAHs in Huangpu river was the incomplete combustion of fossil fuel, and middle-lower Huangpu river had some mixed sources of PAHs.