Widespread contamination by tris(4-chlorophenyl)methane and tris(4-chlorophenyl)methanol in cetaceans from the North Pacific and Asian coastal waters
Widespread contamination by tris(4-chlorophenyl)methane and tris(4-chlorophenyl)methanol in cetaceans from the North Pacific and Asian coastal waters
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DOI：
10.1016/s0269-7491(99)00316-4
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发表时间：
2000-01-01
影响因子：
8.9
通讯作者：
Karuppiah, S
中科院分区：
文献类型：
--
作者：
Minh, TB;Watanabe, M;Karuppiah, S
为了了解三(4-氯苯基)甲烷(TCPMe)和三(4-氯苯基)甲醇(TCPMOH)这两种新发现的微污染物的全球分布、迁移和行为，本研究测定了1985-97年间从北太平洋不同地点和一些亚洲国家沿海水域收集的九种成年雄性鲸目动物的脂肪中它们的浓度和其他持久性有机氯(OC)。研究发现，北露脊鲸海豚体内的 TCPMe 和 TCPMOH 浓度最高，这可能是由于该物种分布广泛，包括加利福尼亚沿海等一些污染严重的地区。在近海和沿海物种中均观察到 TCPMe 和 TCPMOH 残留水平升高，表明这些化合物在海洋环境中广泛受到污染。温带和冷水水域的鲸目动物中 TCPMe 和 TCPMOH 的污染程度高于热带地区的鲸目动物。 TCPMe 和 TCPMOH 在北太平洋和亚洲沿海水域的鲸目动物中的纬度分布与 DDT 相似，表明 TCPMe 和 TCPMOH 在海洋环境中的可迁移性较差。 TCPMe 和 TCPMOH 的出现数据进一步表明这些化合物具有很高的生物蓄积潜力，与滴滴涕相当。鲸目动物中 TCPMe/TCPMOH 的相对浓度明显高于海豹中观察到的浓度，表明鲸目动物中这些化合物的代谢能力低于鳍足类动物，这与多氯联苯和滴滴涕等经典污染物类似。 (C) 2000 Elsevier Science Ltd. 保留所有权利。
For understanding global distribution, transport and behavior of tris(4-chlorophenyl)methane (TCPMe) and tris(4-chlorophenyl)methanol (TCPMOH), the two newly identified microcontaminants, the present study determined their concentrations and other persistent organochlorines (OCs) in the blubber of nine species of adult male cetaceans collected from various locations in the North Pacific Ocean and coastal waters of some Asian countries, during 1985-97. Concentrations of TCPMe and TCPMOH were found to be highest in northern right whale dolphins, which may be attributable to wide distribution of this species, including some heavily polluted areas such as coastal California. Elevated residue levels of TCPMe and TCPMOH were observed in both off-shore and coastal species, suggesting widespread contamination of these compounds in the marine environment, Higher contamination of TCPMe and TCPMOH was found in cetaceans from temperate and cold waters than those from tropical regions. The latitudinal distribution of TCPMe and TCPMOH in cetaceans from the North Pacific and Asian coastal waters was similar to that of DDTs, suggesting less transportable nature of TCPMe and TCPMOH in the marine environment. Data on the occurrence of TCPMe and TCPMOH further indicated high bioaccumulation potential of these compounds, which was comparable to DDTs. Relative concentrations of TCPMe/TCPMOH in cetaceans were apparently higher than those observed in seals, suggestive of lower metabolic capacity for these compounds in cetaceans than in pinnipeds, which is similar to classic contaminants like polychlorinated biphenyls and DDTs. (C) 2000 Elsevier Science Ltd. All rights reserved.