Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China.
Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China.
J Hazard Mater. 2022 Jun 5;431:128602. doi: 10.1016/j.jhazmat.2022.128602. Epub 2022 Feb 28.
Perfluoroalkyl substances (PFASs) are known to be persistent and toxic, and can be accumulated and trophic magnified in the environments. PFASs are widely distributed, and their coastal input poses a threat to the health of aquatic organisms and local residents. In present study, 17 PFASs including one emerging polyether substitute in water, sediment, and organisms were investigated from the South China Sea. Perfluorobutanoic acid (PFBA) was predominant in water, of which concentration ranged from ND to 10.26 ng/L, with a mean of 5.21 ng/L. Similar to sediment and organisms, PFBA was the substance with the highest concentration detected among PFASs. This result seemingly indicated that use of short-chain PFASs as substitutes for long-chain PFASs in recent years. Trophic magnification factors (TMFs) of PFASs were estimated in the marine food web. TMFs > 1 was observed only in perfluorooctane sulfonic acid (PFOS), indicating a biomagnification potential of PFOS in the given ecosystem. The estimated daily intake (EDI) of PFOS and PFOA were most prevalent in mollusk, whereas the EDI of PFBA was greater in fish and shrimp. The hazard ratio (HR) reported for seven dominant PFASs were lower than 1, which suggests that PFASs via seafood consumption would not cause significant health risk to local residents.
全氟烷基物质（PFASs）具有持久性和毒性，并能在环境中积累和营养级放大。PFASs 广泛分布，其沿海水域输入对水生生物和当地居民的健康构成威胁。本研究从南海采集了水、沉积物和生物样本，检测了 17 种 PFASs，包括一种新兴的聚醚替代品。全氟丁烷酸（PFBA）在水中占主导地位，浓度范围为未检出到 10.26ng/L，平均值为 5.21ng/L。与沉积物和生物相似，PFBA 是 PFASs 中浓度最高的物质。这一结果似乎表明，近年来短链 PFASs 已被用作长链 PFASs 的替代品。本研究还评估了海洋食物网中 PFASs 的营养级放大因子（TMFs）。仅在全氟辛烷磺酸（PFOS）中观察到 TMFs>1，表明在给定的生态系统中 PFOS 具有生物放大潜力。在软体动物中，PFOS 和 PFOA 的估计每日摄入量（EDI）最为普遍，而在鱼类和虾类中，PFBA 的 EDI 更高。报告的 7 种主要 PFASs 的危害比（HR）均低于 1，这表明通过食用海鲜，PFASs 不会对当地居民造成显著的健康风险。
