State Key Joint Laboratory of Environmental Simulation and Pollution Control and School of Environment, Beijing Normal University, Beijing, 100875, China,
Ecotoxicology. 2014 May;23(4):486-94. doi: 10.1007/s10646-014-1233-7. Epub 2014 Apr 17.
Polycyclic aromatic hydrocarbons (PAHs) with carcinogenic and mutagenic characteristics have been detected in many estuaries and bays around the world. To detect the contaminated level in typical estuaries in Haihe river basin, China, a comprehensive survey of 16 PAHs in surface sediment has been conducted and an ecological risk assessment has been taken. It showed that Haihe river estuary had the highest concentration, ranging from 92.91 to 15886.00 ng g(-1). And Luan river estuary has the lowest polluted level, ranging from 39.55 to 328.10 ng g(-1). PAHs in sediment were dominated by low and mid molecular weight PAHs in all the sampling sites. Most of the sampling sites in all sampling seasons indicated a rarely happened ecological risk of ΣPAHs, while the S6 in Haihe river estuary was in an occasionally anticipated risk. To illustrate the spatial distribution pattern of PAHs in surface sediment in Haihe river basin, the results were compared with previous research of the research team. Based on data of the comparison, it had been revealed that Haihe river had the most serious PAHs pollution, with an average concentration of 5884.86 ng g(-1), and showed the highest contamination level in all four ecological units. The ΣPAHs concentration showed in a rank of reservoir > estuary > rural area > city.
多环芳烃（PAHs）具有致癌和致突变特性，已在世界许多河口和海湾中检测到。为了检测中国海河流域典型河口的污染程度，对表层沉积物中的 16 种多环芳烃进行了综合调查，并进行了生态风险评估。结果表明，海河河口的浓度最高，范围为 92.91 至 15886.00ng/g。而滦河口的污染水平最低，范围为 39.55 至 328.10ng/g。所有采样点的沉积物中以低分子量和中分子量的多环芳烃为主。在所有采样季节的大多数采样点，ΣPAHs 显示出很少发生的生态风险，而海河河口的 S6 偶尔会出现预期的风险。为了说明海河流域表层沉积物中多环芳烃的空间分布模式，将结果与研究小组以前的研究进行了比较。基于比较的数据，揭示出海河的多环芳烃污染最严重，平均浓度为 5884.86ng/g，在所有四个生态单元中都显示出最高的污染水平。ΣPAHs 浓度呈现出水库>河口>农村>城市的等级。
