Qingdao Engineering Research Center for Rural Environment, Qingdao Agricultural University, Qingdao 266109, China.
School of Ocean, Yantai University, Yantai 264005, China.
Mar Pollut Bull. 2021 Mar;164:112037. doi: 10.1016/j.marpolbul.2021.112037. Epub 2021 Jan 28.
The distribution, congener patterns, possible sources, and ecological risks of polybrominated diphenyl ethers (PBDEs) were investigated in the surface sediments of 20 fishing ports along the coast of Bohai Sea. PBDEs are widespread pollutants in fishing ports, and the total concentrations of 14 PBDEs (∑PBDEs) are 4.23-20.59 ng/g with a mean value of 12.56 ng/g. BDE-209 was the dominant congener. The fishing ports with high PBDE concentrations were located near Liaohe River, Haihe River, manufacturing plants of BFRs near Laizhou Bay, and tipping areas of marine garbage. BDE-209 and BDE-47 were the most important congeners that discriminate PBDE pollution. The possible sources of PBDEs included the input of commercial mixtures of penta-BDE, octa-BDE, and deca-BDE, the debromination of BDE-209, and the atmospheric transport of the low brominated diphenyl ethers. The ecological risks in surface sediments were attributed to the congeners of tetra-BDE, penta-BDE, and deca-BDE with low or medium levels.
本研究调查了渤海沿海 20 个渔港表层沉积物中多溴二苯醚（PBDEs）的分布、同系物模式、可能来源和生态风险。PBDEs 是渔港中广泛存在的污染物，14 种 PBDEs（∑PBDEs）的总浓度为 4.23-20.59 ng/g，平均值为 12.56 ng/g。BDE-209 是主要的同系物。PBDE 浓度较高的渔港位于辽河、海河附近，莱州湾附近的 BFR 制造厂和海洋垃圾倾倒区。BDE-209 和 BDE-47 是区分 PBDE 污染的最重要的同系物。PBDEs 的可能来源包括商用五溴、八溴和十溴混合物的输入、BDE-209 的脱溴以及低溴二苯醚的大气传输。表层沉积物中的生态风险归因于低溴和中溴二苯醚的四溴、五溴和十溴同系物。
