Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China; Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
Mar Pollut Bull. 2013 Sep 15;74(1):110-5. doi: 10.1016/j.marpolbul.2013.07.020. Epub 2013 Jul 29.
The concentrations of 21 polybrominated diphenyl ethers (PBDEs) congeners were analyzed in organisms within a marine food web collected from the Liaodong Bay, North China. The total concentrations of PBDEs in all samples ranged from 0.87 to 91.4 ng g(-1) lipid weight (lw). BDE-47 was the predominant congener and had a concentration ranging from 0.30 to 36.1 ng g(-1) lw. The trophic magnification factors (TMF) of the PBDEs were calculated using the trophic levels obtained from the stable nitrogen isotope ratios. The TMF value of ∑PBDEs was 3.50 for the entire food web and 2.21 for the food web excluding seabirds. Four concentration ratios, BDE-99/BDE-100, BDE-99/BDE-47, BDE-153/BDE-154 and BDE-183/BDE-154, decreased linearly with the increase of the trophic levels in the invertebrates and the fishes (p<0.01). The results suggested that the PBDEs were steadily metabolized in the trophic transfer process along the food chain.
在中国北方的辽东湾，我们分析了海洋食物网中生物体中 21 种多溴二苯醚（PBDEs）同系物的浓度。所有样本中 PBDEs 的总浓度范围为 0.87 至 91.4ng/g（脂质重量）。BDE-47 是主要的同系物，浓度范围为 0.30 至 36.1ng/g（脂质重量）。我们使用稳定氮同位素比获得的营养级来计算 PBDEs 的营养放大因子（TMF）。整个食物网中∑PBDEs 的 TMF 值为 3.50，不包括海鸟的食物网的 TMF 值为 2.21。在无脊椎动物和鱼类中，有四个浓度比（BDE-99/BDE-100、BDE-99/BDE-47、BDE-153/BDE-154 和 BDE-183/BDE-154）与营养级呈线性关系，随着营养级的增加而降低（p<0.01）。结果表明，在食物链的营养传递过程中，PBDEs 被稳定地代谢。
