Showing 1-15 of 185
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Changes in the levels and predictors of per-and poly-fluoroalkyl substances in maternal plasma, relative to timelines of EPA PFOA Stewardship
Science
18 Oct 2025 | Environ. Int.
PFOS, PFOA, PFHxS, PFHpS, and Me-PFOSA-AcOH declined over time after EPA’s PFOA Stewardship Program, but other PFAS such as PFNA, PFUnA, PFDeA, PFDoA, and GenX increased especially among non-White mothers, and higher levels were linked to eating fish/shellfish and vegetables, working, and having carpet or pets during pregnancy, showing that policies reduced some PFAS but exposure sources and inequities remain.
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From carboxylates to chlorinated sulfonates: Contrasting fate and treatment prospects of GenX and F53B in WWTPs
Science
13 Oct 2025 | Science of The Total Environment
In wastewater systems, GenX was found to largely persist in the aqueous phase with minimal degradation, while F-53B partitions to sludge and undergoes limited breakdown, and advanced treatments like UV with sulfite or electrochemical oxidation outperform conventional processes, though byproducts and limited field data remain concerns.
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Comparing in-home and bottled drinking water quality: regulated and emerging contaminants in rural Central Appalachia
Science
3 Sep 2025 | J Water Health
PFAS were present at very low levels in some in-home, spring, and bottled water, measured by LC-MS/MS with reporting limits down to 0.015 ppt, bottled water showed total PFAS up to 2.354 ppt with no individual PFAS exceeding the April 2024 EPA MCLs, and only one tap sample contained GenX at 0.136 ppt.
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Oregon moves to regulate harmful ‘forever chemicals’
Policy
2 Apr 2025
Oregon’s list of regulated hazardous substances is getting its first update in nearly two decades with the addition of six “forever chemicals” known to harm human health.
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Per-and polyfluoroalkyl ether acid (PFEA) concentrations in indoor dust are higher in homes closer to a fluorochemical manufacturing facility
Science
31 Mar 2025 | Environ. Sci. Technol.
Homes closer to a PFAS manufacturing facility in North Carolina had significantly higher levels of toxic PFAS—including GenX and Nafion byproducts—in indoor dust, suggesting that air emissions from the facility may be a major source of exposure, especially for children.
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Sources and Seasonal Variations of Per- and Polyfluoroalkyl Substances (PFAS) in Surface Snow in the Arctic
Science
26 Nov 2024 | Environ Sci Technol
PFAS in remote Arctic snow formed during long-range atmospheric processes were found to positively correlate with the amount of sunlight, suggesting seasonal influences on their formation and deposition. This study also provided the first evidence for the possible atmospheric formation of PFOS and GenX.
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Wilmington resolution supports state legislation holding GenX and PFAS manufacturers financially accountable
Policy
18 Jul 2024
Mayor Bill Saffo introduced a resolution at the Wilmington City Council meeting last night that supports legislation that would force chemical manufacturers to finance clean water efforts, which is currently waiting in committee in the NC House.
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The bioaccumulation and ecotoxicity of co-exposure of per(poly)fluoroalkyl substances and polystyrene microplastics to Eichhornia crassipes
Science
3 Jun 2024 | Water Res
Gen X and F-53B, used as alternatives to PFOA and PFOS, respectively, show significant bioaccumulation and eco-environmental risks, especially when co-exposed with polystyrene microplastics, which increase their bioavailability and toxicity to the aquatic plant Eichhornia crassipes.
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Sub-acute exposure of male guppies (Poecilia reticulata) to environmentally relevant concentrations of PFOA and GenX induces significant changes in the testis transcriptome and reproductive traits
Science
26 Apr 2024 | Environ Int
Exposure of male guppies to environmentally realistic levels of a legacy PFAS and its replacement compound (GenX) resulted in altered reproductive traits, including changes in sexual behavior and sperm motility, as well as gene expression related to immune regulation. These changes highlight the potential adverse effects of PFAS on behavior, fertility, and immunity in fish populations.
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Could floating plant islands help remove PFAS from waterways in the Cape Fear Basin?
News
18 Jan 2024 | NC Health News
A recent study by Swedish researchers suggests that plants could play a role in purifying PFAS-contaminated wetlands.
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GenX Disturbs the Indicators of Hepatic Lipid Metabolism Even at Environmental Concentration in Drinking Water via PPARα Signaling Pathways
Science
27 Dec 2023 | Chem Res Toxicol
GenX, a substitute for PFOA, was found to cause liver damage and disrupt lipid metabolism in mice even at low environmental concentrations when exposed to drinking water.
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Chemical crisis: The unseen toxic threat contaminating wildlife worldwide
News
28 Oct 2023 | The Hill
An unseen but growing chemical contamination crisis is threatening wildlife across all seven continents, exacerbating a host of environmental threats they’re already facing.
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Per- and Polyfluoroalkyl Substances (PFAS) in PubChem: 7 Million and Growing
Science
23 Oct 2023 | Environ. Sci. Technol.
The Organisation for Economic Co-operation and Development's 2021 revision of the PFAS definition has led to the inclusion of over 7 million PFAS compounds in PubChem.
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EPA okays Chemours request to export GenX from the Netherlands to Fayetteville Works plant
News
19 Oct 2023 | NC Newsline
The Chemours Fayetteville Works plant can import up to 4 million pounds of GenX from the company’s Netherlands facility over the next year, according to an EPA letter authorizing the shipments — 220 times the amount exported in 2014.
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Diffusion and partitioning of different PFAS compounds through thermoplastic polyurethane and three different PVC-EIA liners
Science
26 May 2023 | Sci Total Environ
PFAS was found to diffuse through certain membranes used in landfills, potentially leading to groundwater contamination.