Pan Jing, Yang Yong-Liang, Xu Qing, Chen Da-Zhou, Xi Dan-Li
College of Environmental Sciences and Engineering, Donghua University, Shanghai 200051, People's Republic of China.
Chemosphere. 2007 Jan;66(10):1971-82. doi: 10.1016/j.chemosphere.2006.07.070. Epub 2006 Sep 20.
Influence of current circulation and sewage sludge on spatial distributions of polychlorinated biphenyls (PCBs), polychlorinated naphthalenes (PCNs), and polybrominated diphenyl ethers (PBDEs) in sediments and mussels from the Qingdao coastal sea were investigated. Total concentrations of PCBs, PCNs and PBDEs in sediments ranged 6.5-32.9, 0.2-1.2, and 0.1-5.5 ngg(-1) dry wt, respectively. The maximum concentrations were all found near the Haibo River mouth, affected by sewage sludge input from the river. Under the current system in Jiaozhou Bay the organic pollutants were subject to deposit on the east side of the bay and trapped inside the bay. Sewage sludge was an important source of PCBs, PCNs and PBDEs in the bay and exponentially magnified the enrichment of PCBs. On the other hand, the congener profiles of PCBs in sediments outside the bay may signify an atmospheric source of PCBs. Total Concentrations of PCBs, PCNs and PBDEs in mussels were 61.4-88.6, 9.0, and 13.8 ngg(-1)lipid, respectively. Mussels enriched significantly PCBs, PCNs and PBDEs relative to the sediments. The total toxicity equivalent quantities (TEQs) of PCNs in mussels were generally lower than that of PCBs. The fluxes of the total PCBs and their TEQs have been decreased steadily since 1950s. The lower chlorinated/brominated congeners of PCNs and PBDEs may exhibit a greater tendency due to less lipophilic and thus a greater probability of being affected by the current circulation in the bay.
研究了青岛近岸海域海流循环和污水污泥对沉积物及贻贝中多氯联苯（PCBs）、多氯萘（PCNs）和多溴二苯醚（PBDEs）空间分布的影响。沉积物中PCBs、PCNs和PBDEs的总浓度分别为6.5 - 32.9、0.2 - 1.2和0.1 - 5.5 ng g⁻¹干重。最高浓度均出现在海泊河口附近，受河流污水污泥输入影响。在胶州湾当前的水系条件下，有机污染物倾向于沉积在海湾东侧并被困在海湾内。污水污泥是海湾中PCBs、PCNs和PBDEs的重要来源，并以指数方式放大了PCBs的富集。另一方面，海湾外沉积物中PCBs的同系物分布可能表明其有大气来源。贻贝中PCBs、PCNs和PBDEs的总浓度分别为61.4 - 88.6、9.0和13.8 ng g⁻¹脂质。相对于沉积物，贻贝对PCBs、PCNs和PBDEs有显著富集。贻贝中PCNs的总毒性当量（TEQs）通常低于PCBs。自20世纪50年代以来，PCBs及其TEQs的通量一直在稳步下降。由于亲脂性较低，PCNs和PBDEs中氯/溴取代程度较低的同系物可能更易受海湾海流循环影响，因而表现出更大的迁移趋势。
