Showing 61-75 of 212
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Surface-water/groundwater boundaries affect seasonal PFAS concentrations and PFAA precursor transformations
Science
23 Nov 2021 | Environ Sci Process Impacts
Natural biogeochemical fluctuations associated with surface-water and groundwater boundaries may lead to PFAA precursor loss and seasonal variations in PFAA concentrations.
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What difference can drop-in substitution actually make? A life cycle assessment of alternative water repellent chemicals
Science
22 Nov 2021 | J. Clean. Prod.
A life cycle assessment found non-fluorinated durable water repellents for outdoor garments were environmentally preferable to fluorinated variants leading to the recommendation to phase out PFAS.
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Per- and polyfluoroalkyl substances (PFASs) in airborne particulate matter (PM2.0) emitted during floor waxing: A pilot study
Science
16 Nov 2021 | Atmos. Environ.
Significantly higher levels of PFAS were measured during floor waxing, potentially putting occupational workers at greater risk.
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Biodegradation of per- and polyfluoroalkyl substances (PFAS): A review
Science
16 Nov 2021 | Bioresour Technol
The biodegradation pathways for different types of subclasses of PFAS are summarized in two major categories, biodegradation with and without the cleavage of the C-F bond.
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A New OECD Definition for Per- and Polyfluoroalkyl Substances
Science
16 Nov 2021 | Environ Sci Technol
The Organisation for Economic Co-operation and Development and the United Nations Environment Programme expanded on their definition of PFAS to include fluorinated substances that contain at least one fully fluorinated methyl or methylene carbon atom.
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As the EPA pursues PFAS standards, industry and residents are at odds over state regulation
Policy
9 Nov 2021
Wisconsin residents affected by PFAS contamination say the Biden administration’s recently announced strategy to address harmful forever chemicals doesn’t go far enough and highlights the need for state standards.
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Exposure to perfluoroalkyl substances in waste recycling workers: Distributions in paired human serum and urine
Science
9 Nov 2021 | Environ Int
The results of this study suggest that sorters at recycling facilities may be directly exposed to PFAS and is the first to detect PFPAs in human urine.
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Western Ky. city grapples with widespread pollution from Teflon recycler
News
8 Nov 2021 | APM Reports
A WFPL News investigation has found three of Shamrock Technologies’ decades-old facilities have polluted Henderson with PFAS chemicals, impacting thousands of people who work, learn and live in the area.
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Analytical uncertainties in a longitudinal study - A case study assessing serum levels of per- and poly-fluoroalkyl substances (PFAS)
Science
2 Nov 2021
PFAA precursors were most likely to be the primary contaminant in AFFF-impacted surface soils.
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Why Is the Biodegradation of Polyfluorinated Compounds So Rare?
Science
27 Oct 2021 | mSphere
This Perspective highlights the microbiological reasons why polyfluorinated compounds resist metabolism.
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Application of a Framework for Grouping and Mixtures Toxicity Assessment of PFAS: A Closer Examination of Dose-Additivity Approaches
Science
21 Oct 2021 | SOT
This article presents a new and systematic analysis of available PFAS toxicity study data using a tiered mixtures risk assessment framework consistent with the United States and international mixtures guidance.
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Newsom signs laws banning 'forever chemicals' in children's products, food packaging
Policy
12 Oct 2021
California Gov. Gavin Newsom signed two laws on Tuesday banning the use of toxic “forever chemicals” in children’s products and disposable food packaging.
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Concentration profiles of per- and polyfluoroalkyl substances in major sources to the environment
Science
12 Oct 2021 | J. Environ. Manage.
Precursor biotransformation products are detected in landfill leachates and wastewater-related sources.
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Exposure routes, bioaccumulation and toxic effects of per- and polyfluoroalkyl substances (PFASs) on plants: A critical review
Science
6 Oct 2021 | Environ Int
PFAS exposure damages plant cell structure and organelle functions.
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Nothing lasts forever: understanding microbial biodegradation of polyfluorinated compounds and perfluorinated alkyl substances
Science
5 Oct 2021 | Microb Biotechnol
This review discusses the underlying reasons why microbial degradation of heavily fluorinated compounds is rare.