NINA - Norwegian Institute for Nature Research, Fram Centre, NO-9296 Tromsø, Norway.
NILU - Norwegian Institute for Air Research, Fram Centre, NO-9296 Tromsø, Norway.
Environ Sci Technol. 2020 Apr 21;54(8):5011-5020. doi: 10.1021/acs.est.9b06818. Epub 2020 Apr 1.
The white-tailed eagle () in Scandinavia has suffered from impaired reproduction due to high exposure to industrial pollution between the 1960s and 1980s. While population numbers are rising again, new contaminants, such as per- and polyfluoroalkyl substances (PFAS), are increasingly found in high trophic avifauna and are of concern to potentially impact once again on population health. In the present study, we examined PFAS levels in plasma of white-tailed eagle nestlings from northern Norway over the last decade (2008-2017). While PFOA and PFNA exposure did not follow a significant time trend, PFOS and PFHxS concentrations decreased over time, and ≥C perfluorinated carboxylic acids only seem to level off during the last four years. This may in fact be the first evidence for a change in the trend for some of these compounds. Furthermore, since several PFAS are expected to be highly present in aqueous film-forming foams used at airports, we also investigate the potential of the two main airports in the region to act as hotspots for PFAS. Our results indeed show decreasing exposure to PFOA with distance to the airports. Altogether, our results seem to show that legislation actions are effective, and continued concern for PFAS exposure of high trophic wildlife is still warranted, even in the northern environment.
在 20 世纪 60 年代至 80 年代期间，斯堪的纳维亚半岛的白尾鹰（）由于受到工业污染的高度暴露，繁殖能力受到损害。虽然种群数量再次上升，但新的污染物，如全氟和多氟烷基物质（PFAS），在高营养级鸟类中越来越多地被发现，这令人担忧，因为它们可能再次对种群健康产生影响。在本研究中，我们研究了过去十年（2008-2017 年）在挪威北部的白尾鹰巢幼鸟的血浆中的 PFAS 水平。虽然 PFOA 和 PFNA 的暴露没有呈现出明显的时间趋势，但 PFOS 和 PFHxS 的浓度随时间下降，并且≥C 全氟化羧酸似乎只在过去四年中达到稳定水平。这实际上可能是这些化合物中的一些趋势发生变化的第一个证据。此外，由于预计在机场使用的水基成膜泡沫中存在大量的 PFAS，我们还调查了该地区两个主要机场是否有可能成为 PFAS 的热点。我们的结果确实表明，随着距离机场的增加，PFOA 的暴露量呈下降趋势。总的来说，我们的研究结果似乎表明，立法行动是有效的，即使在北部环境中，对高营养级野生动物的 PFAS 暴露仍应继续关注。
