Aarhus University, Department of Environmental Science, Arctic Research Centre, 4000 Roskilde, Denmark.
Ljusstöparbacken 11a, 11765 Stockholm, Sweden. Electronic address: https://www.vandrefalk.dk.
Sci Total Environ. 2019 Jan 15;648:894-901. doi: 10.1016/j.scitotenv.2018.08.090. Epub 2018 Aug 7.
A suite of perfluoroalkyl substances (PFASs) and polychlorinated naphthalenes (PCNs) were determined in 41 peregrine falcon eggs collected in South Greenland between 1986 and 2014. Median concentrations of perfluorinated sulfonic acids (ΣPFSA) and perfluorinated carboxylic acids (ΣPFCA) were 303 ng/g dry weight (dw) (58 ng/g wet weight, ww) and 100 ng/g dw (19 ng/g ww), respectively, which was comparable to other studies. Perfluorooctane sulfonate (PFOS) accounted for 94% on average of all PFSAs, but did not show a significant time trend. Perfluorohexane sulfonate (PFHxS), perfluoroheptane sulfonate (PFHpS) and perfluorodecane sulfonate (PFDS) showed non-linear decreases over the study period, while some long-chain PFCAs increased significantly. The PCN profile was dominated by the penta-, hexa- and tetrachlorinated congeners CN-52/60, CN-66/67 and CN-42. CN-54, an indicator of combustion, accounted for 2.4% of ΣPCN on average. All PCN congeners showed a decreasing tendency, which was significant for lipid-normalized concentrations of CN-53, CN-54 and CN-63. The ΣPCN median concentration was 21 ng/g lipid weight, which is in the high end of concentrations reported for bird eggs. The PCN and PFAS concentrations add to an already high contaminant burden and a complex chemical cocktail in the peregrine falcon population in Greenland, mainly reflecting contaminant exposure during migration and winter stays in Central and South America.
在 1986 年至 2014 年间，在格陵兰南部收集了 41 枚游隼的卵，对其进行了一系列全氟烷基物质（PFAS）和多氯代萘（PCN）的检测。全氟磺酸（ΣPFSA）和全氟羧酸（ΣPFCA）的中值浓度分别为 303ng/g 干重（dw）（58ng/g 湿重，ww）和 100ng/g dw（19ng/g ww），这与其他研究相当。全氟辛烷磺酸（PFOS）平均占所有 PFSA 的 94%，但没有表现出明显的时间趋势。全氟己烷磺酸（PFHxS）、全氟庚烷磺酸（PFHpS）和全氟癸烷磺酸（PFDS）在研究期间呈非线性下降，而一些长链 PFCAs 则显著增加。PCN 图谱主要由五氯、六氯和四氯同系物 CN-52/60、CN-66/67 和 CN-42 组成。燃烧指示物 CN-54 平均占 ΣPCN 的 2.4%。所有 PCN 同系物均呈下降趋势，其中 CN-53、CN-54 和 CN-63 的脂重归一化浓度下降趋势显著。ΣPCN 的中值浓度为 21ng/g 脂重，这在鸟类卵中报告的浓度范围内处于较高水平。PCN 和 PFAS 的浓度增加了格陵兰游隼种群中已经很高的污染物负担和复杂的化学混合物，主要反映了迁徙过程中和在中美洲和南美洲越冬期间的污染物暴露。
