ECOSPHERE, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium; Behavioural Ecology and Ecophysiology Group, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
ECOSPHERE, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
Environ Res. 2023 Jan 1;216(Pt 2):114644. doi: 10.1016/j.envres.2022.114644. Epub 2022 Oct 25.
Per- and polyfluoroalkyl substances (PFAS) are anthropogenic chemicals that have been globally distributed. Biological time series data suggest variation in temporal PFAS concentrations due to regulations and the phase-out of multiple PFAS analytes. Nonetheless, biomonitoring temporal trends of PFAS concentrations in raptors has only been done sporadically in Europe at a national scale. In the present study, we examined the concentrations of 28 PFAS in livers of common buzzard (Buteo buteo) collected in Belgium in the period 2000-2005 and in 2021. Despite the regulations and phase-out, the ΣPFAS concentrations remained similar in the livers over the past 20 years. However, over time the abundance of perfluorooctane sulfonate (PFOS), dominant in livers collected in 2000-2005, to the ΣPFAS concentration decreased from 46% to 27%, whereas the abundance of perfluorotetradecanoic acid (PFTeDA), dominant in 2021, increased from 19% to 43%. The PFOS concentrations in the present study did not exceed the Toxicity Reference Values (TRVs), which were determined in liver on the characteristics of an avian top predator. The absence of temporal changes in PFAS concentrations is hypothesized to be due to a lagged response in environmental concentrations compared to atmospheric concentrations.
全氟和多氟烷基物质（PFAS）是人为合成的化学物质，已在全球范围内分布。生物时间序列数据表明，由于法规的变化以及多种 PFAS 分析物的逐步淘汰，PFAS 浓度存在时间上的变化。尽管如此，在欧洲，仅在国家范围内零星地对猛禽中 PFAS 浓度的时间趋势进行了生物监测。在本研究中，我们检测了 2000-2005 年和 2021 年期间在比利时采集的普通鹰（Buteo buteo）肝脏中 28 种 PFAS 的浓度。尽管有法规和逐步淘汰，但过去 20 年来肝脏中的 ΣPFAS 浓度仍然相似。然而，随着时间的推移，在 2000-2005 年采集的肝脏中占主导地位的全氟辛烷磺酸（PFOS）在 ΣPFAS 浓度中的丰度从 46%下降到 27%，而在 2021 年占主导地位的全氟十四烷酸（PFTeDA）的丰度从 19%增加到 43%。本研究中的 PFOS 浓度未超过毒理学参考值（TRVs），该值是根据鸟类顶级捕食者的肝脏特征确定的。PFAS 浓度没有时间变化的假设是由于环境浓度相对于大气浓度存在滞后反应。
