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首页> 外文期刊>Environmental Science & Technology >High Accumulation of Toxic Butyltins in Marine Mammals from Japanese Coastal Waters
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High Accumulation of Toxic Butyltins in Marine Mammals from Japanese Coastal Waters

机译：日本沿海水域海洋哺乳动物中高含量的有毒丁基锡

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Organotins are one of the most toxic chemicals in the aquatic environment. While contamination and toxic effects of organotin compounds in lower trophic aquatic organisms have been well-documented, no investigation has focused so far on higher aquatic organisms like marine mammals. We attempted to analyze butyltin compounds (BTCs), including mono-(MBTs), di- (DBTs), and tributyltin compounds (TBTs), in various tissues and organs of finless porpoise (Neophocaena phocaenoides) collected from Japanese coastal waters and detected these compounds in all the animals. The highest residue levels were found in the liver of a porpoise collected in the inland sea, recording more than 10 ppm BTCs on a wet weight basis. The composition of BTCs was different according to the tissues and organs with higher proportions of DBTs noticed in the liver and blood. Estimation of BTC burdens in tissues and organs indicated that muscle, liver, and blubber retained predominant portion of TBTs, DBTs, and MBTs. The occurrence of higher rates of TBTs on the whole implied the lower metabolic potential of porpoises to BTCs.
机译：有机锡是水生环境中最具毒性的化学物质之一。尽管有机锡化合物在较低营养的水生生物中的污染和毒性作用已有充分文献记载，但迄今为止，尚无研究集中在海洋哺乳动物等较高水生生物上。我们尝试分析了从日本沿海水域收集的无鳍海豚（Neophocaena phocaenoides）的各种组织和器官中的丁基锡化合物（BTC），包括单-（MBTs），二-（DBTs）和三丁基锡化合物（TBTs），并进行了检测。所有动物中的化合物。在内陆海域收集的一只海豚的肝脏中发现了最高残留水平，以湿重计记录了超过10 ppm的BTC。 BTC的组成因组织和器官而异，肝脏和血液中发现的DBT比例更高。对组织和器官中BTC负担的估计表明，肌肉，肝脏和脂肪保留了TBT，DBT和MBT的主要部分。总体上较高的三丁基锡化合物的出现暗示着海豚对BTC的代谢潜力较低。

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