Malmvärn Anna, Marsh Göran, Kautsky Lena, Athanasiadou Maria, Bergman Ake, Asplund Lillemor
Department of Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden.
Environ Sci Technol. 2005 May 1;39(9):2990-7. doi: 10.1021/es0482886.
Methoxylated polybrominated diphenyl ethers (MeO-PBDEs) and hydroxylated PBDEs (OH-PBDEs) have recently been identified in fish and wildlife from the Baltic Sea. Both OH-PBDEs and MeO-PBDEs are known natural products, while OH-PBDEs also may be metabolites of PBDEs. The aim of the present study was to determine if the red macroalga Ceramium tenuicorne could be a source for MeO- and OH-PBDEs in the Baltic environment. Blue mussels (Mytilus edulis) from the same area were also investigated for their content of MeO- and OH-PBDEs. Seven OH-PBDEs and four MeO-PBDEs were present both in the red macroalga and the blue mussels. The mussels also contained a monochlorinated OH-tetraBDE. One of the compounds, 6-methoxy-2,2',3,4,4',5-hexabromodiphenyl ether, has never been reported to occur in the environment. The identification was based on comparison of relative retention times with reference standards, on two gas chromatographic columns of different polarities, together with comparisons of full-scan electron capture negative ionization (ECNI) and electron ionization (EI) mass spectra. It is shown that MeO-PBDEs and OH-PBDEs are present in algae, but at this stage it could not be confirmed if the compounds are produced by the alga itself or by its associated microflora and/or microfauna.
最近在波罗的海的鱼类和野生动物体内发现了甲氧基多溴二苯醚（MeO-PBDEs）和羟基化多溴二苯醚（OH-PBDEs）。OH-PBDEs和MeO-PBDEs都是已知的天然产物，而OH-PBDEs也可能是多溴二苯醚的代谢产物。本研究的目的是确定红色大型海藻细角角叉菜是否可能是波罗的海环境中MeO-PBDEs和OH-PBDEs的来源。同时还对同一区域的蓝贻贝（紫贻贝）体内的MeO-PBDEs和OH-PBDEs含量进行了调查。红色大型海藻和蓝贻贝体内均存在7种OH-PBDEs和4种MeO-PBDEs。贻贝中还含有一种一氯代OH-四溴二苯醚。其中一种化合物，6-甲氧基-2,2',3,4,4',5-六溴二苯醚，从未有过在环境中出现的报道。鉴定是基于在两根不同极性的气相色谱柱上与参考标准品比较相对保留时间，以及比较全扫描电子捕获负离子化（ECNI）和电子电离（EI）质谱。结果表明，藻类中存在MeO-PBDEs和OH-PBDEs，但在现阶段无法确定这些化合物是由藻类自身产生的，还是由其相关的微生物群落和/或小型动物产生的。
