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对天津大沽排污河河口两个沉积物泥芯中的多溴联苯醚(PBDEs)、有机氯农药(OCPs)和重金属的含量进行了分析测定,并对这三类典型污染物在该地区近年的污染趋势进行了研究.结果表明,PBDEs的含量有逐步增加的趋势,有机氯的含量分布显示在该地区近年仍然有新的源输入.在过去的一段时间内,重金属没有明显的污染变化趋势.两个泥芯的对比表明,海水的冲刷稀释作用对这三类污染物在底泥中的迁移行为的影响不同.
The contents of PBDEs, OCPs and heavy metals in the mud cores of two sediments in the Dagu sewer river estuary in Tianjin were analyzed and determined, and the pollution of these three typical pollutants in recent years in the area The results showed that the content of PBDEs tended to increase gradually and the content distribution of organochlorines showed that there was still new source input in the area in recent years.However, heavy metals had no obvious trend of pollution change in the past two years.two The comparison of mud core shows that the effect of seawater scouring dilution on the migratory behavior of these three pollutants in sediment is different.