Persistent organochlorines in minke whale (Balaenoptera acutorostrata) and their prey species from the Antarctic and the North Pacific.
Persistent organochlorines in minke whale (Balaenoptera acutorostrata) and their prey species from the Antarctic and the North Pacific.
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DOI：
10.1016/s0269-7491(97)00105-x
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发表时间：
1997
影响因子：
8.9
通讯作者：
Sayaka Aono;S. Tanabe;Y. Fujise;H. Kato;R. Tatsukawa
中科院分区：
文献类型：
--
作者：
Sayaka Aono;S. Tanabe;Y. Fujise;H. Kato;R. Tatsukawa
测定了南极和北太平洋小须鲸鲸脂及其饵料中多氯联苯（PCBs）、滴滴涕（DDTs）、氯代烃（CHLs）、六氯环己烷（HCHs）和六氯苯（HCB）等持久性有机氯的含量。除六氯苯外，南极小须鲸体内其他化合物的残留水平均明显低于北太平洋小须鲸。这是由于南半球的这些污染物水平低于北方，以及南极小须鲸的特殊食性，它以低营养生物为食，主要是磷虾。六氯苯残留水平的南北差异很小，反映了其通过远距离大气迁移的分散性。南极和北太平洋小须鲸体内DDT和CHL化合物的组成相似。然而，正如在南极和北太平洋的饮食中观察到的那样，六氯环己烷异构体的组成在南极和北太平洋之间是不同的，这表明南半球国家更多地使用或正在使用林丹。在1984年至1993年期间，在南极小须鲸中，注意到多氯联苯残留水平升高，这意味着多氯联苯在南半球持续排放。北太平洋也出现了类似的排放，但滴滴涕的污染明显减少。
Persistent organochlorines such as polychlorinated biphenyls (PCBs), DDTs, chlordane compounds (CHLs), hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB) were determined in the blubber of minke whale and its diet collected from the Antarctic and the North Pacific Oceans. Residue levels of these compounds (except HCB) in minke whale from the Antarctic were apparently lower than those from the North Pacific. This is due to the lower levels of these pollutants in the southern hemisphere than in the northern hemisphere and the specific feeding habit of the minke whale from the Antarctic which feeds on lower trophic organisms, primarily euphausiids. The north-south difference for HCB residue levels was small, reflecting its dispersible nature through long-range atmospheric transport. Compositions of DDT and CHL compounds in minke whale from the Antarctic were similar to those from the North Pacific. However, the composition of HCH isomers was different between the Antarctic and the North Pacific as was observed in their diet, suggesting a larger or on-going usage of lindane in the southern hemisphere countries. In minke whale from the Antarctic, the elevated level of PCBs residues was noted during a period of 1984 to 1993, implying a continuous discharge of PCBs in the southern hemisphere. A similar discharge was also suggested in the North Pacific, while a decreasing contamination by DDTs was apparent.