Routti Heli, Lydersen Christian, Hanssen Linda, Kovacs Kit M
Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway.
Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway.
Mar Pollut Bull. 2014 Oct 15;87(1-2):140-146. doi: 10.1016/j.marpolbul.2014.08.001. Epub 2014 Aug 22.
The world's northernmost harbor seal (Phoca vitulina) population, which inhabits Svalbard, Norway, constitutes a genetically distinct population. The present study reports concentrations of 14 PCBs, 5 chlordanes, p,p'-DDT, p,p'-DDE, hexachlorobenzene (HCB), mirex, and, α-, β-and γ-hexachlorocyclohexane (HCH) in blubber, and pentachlorophenol, 4-OH-heptachlorostyrene, 10 OH-PCBs and 14 perfluoroalkyl substances in plasma of live-captured harbor seals from this population (4 males, 4 females, 4 juveniles), sampled in 2009-2010. Concentrations of PCB 153, p,p'-DDE, oxychlordane, α-HCH and mirex and perfluoroalkyl sulfonates in Svalbard harbor seals were considerably lower than harbor seal from more southerly populations, while concentrations of HCB, OH-PCBs and perfluoroalkyl carboxylates were similar for harbor seals from Svalbard and southern areas. Concentrations of PCBs and pesticides in the Svalbard harbor seals were 60-90% lower than levels determined a decade ago in this same population. Current concentrations of legacy POPs are not considered a health risk to the harbor seals from Svalbard.
世界最北端的港海豹（Phoca vitulina）种群栖息于挪威的斯瓦尔巴群岛，是一个基因独特的种群。本研究报告了2009年至2010年期间对该种群现场捕获的港海豹（4只雄性、4只雌性、4只幼崽）的脂肪中14种多氯联苯、5种氯丹、p,p'-滴滴涕、p,p'-滴滴伊、六氯苯（HCB）、灭蚁灵以及α-、β-和γ-六氯环己烷（HCH）的浓度，以及血浆中五氯苯酚、4-羟基七氯苯乙烯、10种羟基多氯联苯和14种全氟烷基物质的浓度。斯瓦尔巴群岛港海豹体内的多氯联苯153、p,p'-滴滴伊、氧化氯丹、α-六氯环己烷、灭蚁灵和全氟烷基磺酸盐的浓度明显低于更靠南种群的港海豹，而斯瓦尔巴群岛港海豹和南部地区港海豹体内六氯苯、羟基多氯联苯和全氟烷基羧酸盐的浓度相似。斯瓦尔巴群岛港海豹体内多氯联苯和农药的浓度比十年前在该同一种群中测定的水平低60%-90%。目前遗留持久性有机污染物的浓度对斯瓦尔巴群岛的港海豹不构成健康风险。
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