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Next generation per-and poly-fluoroalkyl substances:Status and trends,aquatic toxicity,and risk assessment

Eco-Environment & Health 2022年第2期1卷 117-131页

作者： hannah mahoney Yuwei Xie Markus Brinkmann John P.Giesy Toxicology Center University of SaskatchewanSaskatoonSaskatchewanS7N 5B3Canada School of Environment and Sustainability University of SaskatchewanSaskatoonSaskatchewanS7N 5C8Canada Global Institute for Water Security University of SaskatchewanSaskatoonSaskatchewanS7N 3H5Canada Centre for Hydrology University of SaskatchewanSaskatoonSaskatchewanS7N 1K2Canada Department of Veterinary Biomedical Sciences University of SaskatchewanSaskatoonSaskatchewanCanada Department of Integrative Biology and Center for Integrative Toxicology Michigan State UniversityEast LansingMIUSA Department of Environmental Science Baylor UniversityWacoTXUSA

Widespread application of poly-and per-fluoroalkyl substances(PFAS)has resulted in some substances being ubiquitous in environmental *** and their resistance to degradation have allowed them to accumulate in wildlife and humans with potential for toxic *** specific substances of concern have been phased-out or banned,other PFAS that are emerging as alternative substances are still produced and are being released into the *** review focuses on describing three emerging,replacement PFAS:perfluoroethylcyclohexane sulphonate(PFECHS),6:2 chlorinated polyfluoroalkyl ether sulfonate(6:2 Cl-PFAES),and hexafluoropropylene oxide dimer acid(HFPO-DA).By summarizing their physicochemical properties,environmental fate and transport,and toxic potencies in comparison to other PFAS compounds,this review offers insight into the viabilities of these chemicals as replacement *** the chemical scoring and ranking assessment model,the relative hazards,uncertainties,and data gaps for each chemical were quantified and related to perfluorooctane sulfonic acid(PFOS)and perfluorooctanoic acid(PFOA)based on their chemical and uncertainty *** substances were ranked PFOS>6:2 Cl-PFAES>PFOA>HFPO-DA>PFECHS according to their potential toxicity and PFECHS>HFPO-DA>6:2 Cl-PFAES>PFOS>PFOA according to their need for future *** future uses of PFAS remain uncertain in the face of governmental regulations and production bans,replacement PFAS will continue to emerge on the world market and in the environment,raising concerns about their general lack of information on mechanisms and toxic potencies.

关键词： PFAS Replacement PFAS Emerging contaminants Aquatic toxicity Chemical scoring

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