National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory of Source Water Protection, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, China.
National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory of Source Water Protection, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
Ecotoxicol Environ Saf. 2019 Oct 30;182:109454. doi: 10.1016/j.ecoenv.2019.109454. Epub 2019 Jul 25.
The contamination of perfluoroalkyl substances (PFASs) in the Baiyangdian Lake has exacerbated readily since 2008. This study analyzed the perfluoroalkyl carboxylic acids (PFCAs) and perfluoroalkane sulfonic acids (PFSAs) in the surface water, sediment, and fish of the Baiyangdian Lake. In the surface water, the total concentration of PFASs ranged in 1193-3462 ng L (mean 1734 ng L) in the rainy season and 469-1724 ng L (mean 876 ng L) in the dry season. The total concentration of PFASs in the sediment ranged in 1.97-13.3 ng g (mean 6.53 ng g). It was found that PFCAs and PFSAs with longer chains were more easily adsorbed in the sediment. Among the collected fish samples, the enrichment of PFASs in the tissues fell in the order of liver > cheek > muscle. For the muscle, stomach, and liver tissues of the fish samples, significant correlations existed between the δN values and the concentration of perfluorooctane sulfonic acid (PFOS). The contents of PFOS and perfluorooctanoic acid (PFOA) in the fish were not at a level high enough to significantly risk human health.
自 2008 年以来，白洋淀湖中的全氟烷基物质 (PFASs) 污染加剧。本研究分析了白洋淀湖地表水、沉积物和鱼类中的全氟烷基羧酸 (PFCAs) 和全氟烷磺酸 (PFSAs)。在地表水中，PFASs 的总浓度在雨季为 1193-3462ng/L（平均值为 1734ng/L），在旱季为 469-1724ng/L（平均值为 876ng/L）。沉积物中 PFASs 的总浓度范围为 1.97-13.3ng/g（平均值为 6.53ng/g）。研究发现，长链的 PFCAs 和 PFSAs 更容易被吸附到沉积物中。在所采集的鱼类样本中，PFASs 在组织中的富集程度依次为肝脏>脸颊>肌肉。对于鱼类肌肉、胃和肝脏组织，全氟辛烷磺酸 (PFOS) 的浓度与 δN 值之间存在显著相关性。鱼类中 PFOS 和全氟辛酸 (PFOA) 的含量没有达到对人类健康造成显著风险的水平。
