Center for Environmental and Human Toxicology, Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA.
St. Johns River Water Management District, Palm Bay, FL 32909, USA.
Mar Pollut Bull. 2023 Jul;192:115011. doi: 10.1016/j.marpolbul.2023.115011. Epub 2023 May 24.
Per- and polyfluoroalkyl substances (PFAS) are a group of manufactured chemicals that are resistant to degradation and thus persistent in the environment. The presence, uptake, and accumulation of PFAS is dependent upon the physiochemical properties of the PFAS and matrix, as well as the environmental conditions since the time of release. The objective of this study was to measure the extent of PFAS contamination in surface water and sediment from nine vulnerable aquatic systems throughout Florida. PFAS were detected at all sampling locations with sediment exhibiting greater PFAS concentrations when compared to surface water. At most locations, elevated concentrations of PFAS were identified around areas of increased human activity, such as airports, military bases, and wastewater effluents. The results from the present study highlight the ubiquitous presence of PFAS in vital Florida waterways and filled an important gap in understanding the distribution of PFAS in dynamic, yet vulnerable, aquatic environments.
全氟和多氟烷基物质（PFAS）是一组制造的化学品，它们具有抗降解性，因此在环境中持久存在。PFAS 的存在、摄取和积累取决于 PFAS 和基质的物理化学性质，以及自释放以来的环境条件。本研究的目的是测量佛罗里达州 9 个脆弱水生系统地表水和沉积物中 PFAS 的污染程度。在所有采样地点都检测到了 PFAS，与地表水相比，沉积物中 PFAS 的浓度更高。在大多数地点，在机场、军事基地和废水排放等人类活动增加的地区，发现了 PFAS 的浓度升高。本研究的结果突出表明，PFAS 在佛罗里达州重要水道中普遍存在，并填补了了解动态但脆弱水生环境中 PFAS 分布的重要空白。
