Polybrominated diphenyl ethers (PBDEs) and organochlorines in melon-headed whales, Peponocephala electra, mass stranded along the Japanese coasts: Maternal transfer and temporal trend
Polybrominated diphenyl ethers (PBDEs) and organochlorines in melon-headed whales, Peponocephala electra, mass stranded along the Japanese coasts: Maternal transfer and temporal trend
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DOI：
10.1016/j.envpol.2007.12.034
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发表时间：
2008-11-01
影响因子：
8.9
通讯作者：
Tanabe, Shinsuke
中科院分区：
文献类型：
--
作者：
Kajiwara, Natsuko;Kamikawa, Satoko;Tanabe, Shinsuke
自1982年以来，在日本沿海沿着大量搁浅的55头瓜头鲸（Peponocephala electra）的鲸脂中测定了多溴联苯醚（PBDEs）和有机氯化合物（OCs）。DDTs和PCBs在所有调查的标本中占主导地位。在2006年最近一次事件中死亡的鲸鱼体内，多溴二苯醚的浓度（190-510纳克/克脂重）比滴滴涕和多氯联苯低两个数量级，但与六氯环己烷和六氯苯相当。据估计，母亲在整个生殖过程中向后代转移的多溴二苯醚占母亲体内负荷的85%，而在妊娠期间发生的多溴二苯醚转移则要低得多（2.6-3.5%）。2000年后搁浅的瓜头鲸体内多氯联苯、滴滴涕和六氯代苯的浓度低于1982年搁浅的瓜头鲸，而多溴二苯醚和氯化锂的浓度在过去20年中呈时间性增加，这表明其使用和污染的高峰期发生在1982年之后。(C)2008爱思唯尔有限公司版权所有。
Polybrominated diphenyl ethers (PBDEs) and organochlorine compounds (OCs) were determined in the blubber of 55 melon-headed whales (Peponocephala electra) mass stranded along the Japanese coasts since 1982. DDTs and PCBs were predominant in all the specimens investigated. In whales that died during the latest event in 2006, concentrations of PBDEs (190-510 ng/g lipid wt) were approximately two orders of magnitude lower than DDTs and PCBs, but comparable with HCHs and HCB. Maternal transfer of PBDEs to offspring through the whole reproductive process was estimated to be 85% of the mother's body burden, while that occurring during gestation was much lower (2.6-3.5%). Concentrations of PCBs, DDTs, and HCB were lower in melon-headed whales stranded after the year 2000 than those stranded in 1982, whereas PBDE and CHL levels showed a temporal increase during the past 20 years, suggesting that the peak of their usage and contamination occurred after the year 1982. (C) 2008 Elsevier Ltd. All rights reserved.