台灣海域熱帶斑海豚丁基錫累積之研究   全文下載

Accumulation of Butyltin Compounds in the Pantropical Spotted Dolphin, Stenella attenuate, from the Coasts of Taiwan

本研究檢測台灣海域熱帶斑海豚體內總丁基錫化合物包含單丁、二丁及三丁基錫之含量。檢測樣品肝臟組織只有1樣本，其餘13個皆為肌肉組織。結果發現總丁基錫在肌肉組織內之濃度介於14~202 ng／g wet wt間，其中單丁基錫含量高於二丁及三丁基錫；性別差異不存在，累積量和海豚年齡亦無顯著相闕，在肝臟組織中亦以單丁基錫含量最高占77%，總丁基錫為701 ng／g wet wt。本報告是本省首度探討丁基錫在海洋哺乳動物累積之研究，比較上，本省海域海豚總丁基錫之累積濃度亦在其他地區報導之濃度範圍內。

Butyltin compounds (BTs), including mono- (MBT), di- (DBT) and tributyltin (TBT), were identified in the pantropical spotted dolphin, Stenella attenuate, from the coasts of Taiwan. In all 13 cases, the muscle tissues were analyzed. But the liver content was only measured in one of the samples. Dolphin muscle contained BTs ranging from 14 to 202 ng/g wet wt, with MBT dominant in the samples. Sex-differential and age-dependent accumulations of BTs in muscle were not found. The concentration of BTs in the liver was 701 ng/g wet wt, and MBT was dominant (77%). In general, butyltin concentrations in dolphins from the coastal waters of Taiwan are within the range of cetaceans reported worldwide. And to our knowledge, this is the first study reporting on the butyltin pollution of marine mammals in Taiwan. 本研究檢測台灣海域熱帶斑海豚體內總丁基錫化合物包含單丁、二丁及三丁基錫之含量。檢測樣品肝臟組織只有1樣本，其餘13個皆為肌肉組織。結果發現總丁基錫在肌肉組織內之濃度介於14～202 ng／g wet wt間，其中單丁基錫含量高於二丁及三丁基錫；性別差異不存在，累積量和海豚年齡亦無顯著相闕，在肝臟組織中亦以單丁基錫含量最高占77%，總丁基錫為701 ng／g wet wt。本報告是本省首度探討丁基錫在海洋哺乳動物累積之研究，比較上，本省海域海豚總丁基錫之累積濃度亦在其他地區報導之濃度範圍內。