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首页> 美国卫生研究院文献>BioMed Research International >Environmental Characteristics of Polybrominated Diphenyl Ethers in Marine System, with Emphasis on Marine Organisms and Sediments
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Environmental Characteristics of Polybrominated Diphenyl Ethers in Marine System, with Emphasis on Marine Organisms and Sediments

机译：海洋系统中多溴联苯醚的环境特征，着重于海洋生物和沉积物

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摘要

Polybrominated diphenyl ethers (PBDEs), due to their widespread usage as flame retardants and their lipophilicity and persistence, have become ubiquitous in the environment. It is urgent to understand the environmental characteristics of PBDEs in marine system, but they have attracted little attention. We summarize the available data and analyze the regional distributions, controlling factors, and congener patterns of PBDEs in marine and associated environmental matrixes worldwide. Based on meta-analysis, after separating the estuarial sites from the marine sites, ignoring the extraordinary sample sites such as those located just near the point source, the PBDE concentration levels are still in the same order of magnitude from global scale. Despite Principal Component Analysis, the congener patterns of sediments are predominant with the heavy brominated congeners (BDE-209 contributing over 75% to the total load) while the biota abound with the light ones (BDE-47, BDE-99, and BDE-100 taking about 80%). The ratio between BDE-99 and BDE-100 for the lower trophic-level species often turns to be greater than 1, while for those higher species the ratio may be below 1, and some species feed mainly on the crustaceans and zooplankton seems to have a higher ratio value. The data of the PBDEs in marine system are currently limited; thus, data gaps are identified as well.
机译：多溴二苯醚（PBDEs）由于广泛用作阻燃剂及其亲脂性和持久性，已在环境中无处不在。迫切需要了解海洋系统中多溴二苯醚的环境特征，但它们很少受到关注。我们总结了可用数据，并分析了全球海洋和相关环境矩阵中多溴二苯醚的区域分布，控制因素和同类模式。基于荟萃分析，在将河口位置与海洋位置分开之后，忽略了非常规采样点（例如仅位于点源附近的采样点），PBDE浓度水平与全球规模仍处于相同的数量级。尽管进行了主成分分析，但沉积物的同类模式仍以重溴化同类物为主（BDE-209占总负荷的75％以上），而生物群则以轻度同类物为主（BDE-47，BDE-99和BDE- 100，约占80％）。营养级较低的物种的BDE-99与BDE-100之间的比率通常变为大于1，而营养较高的物种的比率则可能低于1，某些物种主要以甲壳类和浮游动物为食更高的比率值。目前海洋系统中多溴二苯醚的数据有限；因此，也可以识别数据差距。

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