Key Laboratory of Marine Chemistry Theory and Technology (Ocean University of China), Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Institute of Marine Organic Geochemistry, Ocean University of China, Qingdao 266100, China.
College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China.
Mar Pollut Bull. 2014 Jul 15;84(1-2):366-72. doi: 10.1016/j.marpolbul.2014.05.035. Epub 2014 Jun 6.
Although hydroxylated (OH-) and methoxylated (MeO-) polybrominated diphenyl ethers (PBDEs) have caused much concern in recent years, few reports had discussed on their input history. In this study, we measured the contents of nine MeO-BDEs, ten OH-BDEs, and total organic carbon (TOC) of two sediment cores from the southern Yellow Sea. 6-MeO-BDE-47, 2'-MeO-BDE-68, 6-OH-BDE-47, and 2'-OH-BDE-68 were the predominant congeners in HH12, while only 2'-OH-BDE-68 and 6-OH-BDE-47 were frequently detected in core HH11. The records showed that OH-/MeO-BDEs in both cores had increased rapidly since the 1950s. Their existence was detected at the bottom layers (∼1800 s) prior to the production of PBDEs (1960s), thus OH-/MeO-BDEs originate from natural origins rather than artificial PBDEs. Comparisons between TOC and OH-/MeO-BDEs indicated that TOC is a potential factor affecting the accumulation of OH-/MeO-BDEs in marine environments. Similar trends and significant correlations between OH-BDEs and MeO-BDEs suggest their common origins or interconversion.
虽然羟基化（OH-）和甲氧基化（MeO-）多溴二苯醚（PBDEs）近年来引起了广泛关注，但关于它们输入历史的报道却很少。本研究测定了取自南黄海两个沉积柱中 9 种 MeO-BDEs、10 种 OH-BDEs 和总有机碳（TOC）的含量。HH12 柱中主要的同系物为 6-MeO-BDE-47、2'-MeO-BDE-68、6-OH-BDE-47 和 2'-OH-BDE-68，而 HH11 柱中则频繁检测到 2'-OH-BDE-68 和 6-OH-BDE-47。记录显示，两个沉积柱中的 OH-/MeO-BDEs 自 20 世纪 50 年代以来迅速增加。其存在于 PBDEs 生产（20 世纪 60 年代）之前的底层（约 1800 年）被检测到，因此 OH-/MeO-BDEs 来源于自然而非人工 PBDEs。TOC 与 OH-/MeO-BDEs 之间的比较表明，TOC 是影响海洋环境中 OH-/MeO-BDEs 积累的一个潜在因素。OH-BDEs 和 MeO-BDEs 之间的相似趋势和显著相关性表明它们具有共同的来源或相互转化。
