检测了大连湾沉积物中16种PAHs的含量,利用TEQ值法评价表层沉积物中PAHs生态风险,并利用组成特征法进行来源解析。结果表明:大连湾表层沉积物中PAHs均主要来自于煤炭等化石燃料燃烧,而受到石油输入影响较小。大部分采样点TEQ值远远超出无观察效应值,表明大连湾内大部分采样点可能已受到PAHs的影响,需引起相关部门的注意。 The content of 16 PAHs in sediments of Dalian Bay was detected. The ecological risk of PAHs in surface sediments was evaluated by TEQ value method, and the origin of PAHs was analyzed by compositional characteristics method. The results show that the PAHs in the surface sediments of Dalian Bay mainly come from the combustion of fossil fuels such as coal and are less affected by the oil input. The TEQ value of most sampling points far exceeds the no-observation effect value, indicating that most of the sampling points in the Dalian Bay may have been affected by PAHs and needs to be noticed by relevant departments.