Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China.
Environ Sci Pollut Res Int. 2011 Feb;18(2):163-72. doi: 10.1007/s11356-010-0359-2. Epub 2010 Jun 26.
The levels and possible sources of 16 polycyclic aromatic hydrocarbons (PAHs) were investigated in the surface sediments of Liaodong Bay, Bohai Sea, China.
The sum of 16 PAHs (∑PAH(16)) concentrations varied from 144.5 to 291.7 ng/g, with a mean value of 184.7 ng/g, indicating low PAH levels compared with reported values for other bays and rivers in China and developed countries. High concentrations of PAHs were observed in the Luan River Estuary and in the vicinity of Qinhuangdao, implying that sewage from the Luan River and shipping activities are important sources of PAHs in Liaodong Bay.
An ecological risk assessment of PAHs, based on the effect range-low quotients, indicated that adverse biological effects caused by acenaphthene occasionally may take place in the sediments of Liaodong Bay. PAH source identification suggested that PAHs in most sediments were mainly from incomplete combustion of grass, wood, and coal. At other stations near the Luan River Estuary, both petrogenic and pyrogenic inputs were significant, and the petroleum-derived PAHs were mainly from shipping activities and discharge of pollutants via rivers.
本研究调查了中国渤海辽东湾表层沉积物中 16 种多环芳烃（PAHs）的含量水平及其可能来源。
∑PAH（16）浓度范围为 144.5 至 291.7ng/g，平均值为 184.7ng/g，与中国其他海湾和河流以及发达国家的报道值相比，该浓度处于较低水平。在龙湾河口和秦皇岛附近发现了高浓度的 PAHs，表明龙湾的污水和航运活动是多环芳烃的重要来源。
基于效应区间低值的多环芳烃生态风险评估表明，在辽东湾沉积物中，苊偶尔可能会产生不利的生物影响。多环芳烃来源的识别表明，大多数沉积物中的多环芳烃主要来自草、木和煤的不完全燃烧。在龙湾河口附近的其他站位，生源和非生源输入都很显著，石油衍生的多环芳烃主要来自航运活动和河流排放的污染物。
