Showing 841-855 of 1965
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Global PFAS Guidance Fuels Debate as EPA Tap Water Limits Loom
News
19 Oct 2022 | Bloomberg Law
The World Health Organization’s views on the risks of PFAS are fanning disputes about a draft EPA rule the White House is reviewing to set enforceable limits on two “forever chemicals” in drinking water.
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[Perspective] EPA Takes Action Against Harmful "Forever Chemicals" in the US Water Supply
Science
19 Oct 2022 | JAMA
This Medical News article discusses new EPA advisories for PFAS as well as new National Academies guidance on expanded testing for exposure.
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PFAS pollute 83% of U.S. waterways
News
18 Oct 2022 | E&E News
The overwhelming majority of U.S. waterways are likely polluted with “forever chemicals,” according to a grim new analysis that comes as the country marks a half-century of its landmark water protection law.
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Analysis of Per- and Poly(fluoroalkyl) Substances (PFASs) in Highly Consumed Seafood Products from U.S. Markets
Science
17 Oct 2022 | J Agric Food Chem
Bottom-feeding organisms tend to have the highest PFAS concentrations, followed by lean fish, fatty fish, and aquaculture with PFUdA and PFDoA being the most frequently detected chemicals.
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Plasma concentrations of perfluoroalkyl acids and their determinants in youth and adults from Nunavik, Canada
Science
14 Oct 2022 | Chemosphere
Long-chain PFAAs levels were 4–7 fold higher in Nunavik Inuit adults compared to the Canadian population and were associated with hunting activity, omega-3 fatty acids, and drinking water from environmental sources.
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See where toxic PFAS have been used in Pennsylvania fracking wells
News
13 Oct 2022 | Environmental Health News
Toxic ‘forever chemicals’, also known as PFAS, have been used in at least eight oil and gas wells in Pennsylvania, but the exact location of those wells has never been publicly disclosed — until now.
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Toxic PFAS pollution is likely at more than 57,000 US locations: Report
News
13 Oct 2022 | Environmental Health News
Toxic PFAS have likely contaminated roughly 57,412 locations across the U.S., according to a new study.
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Occurrences of legacy and emerging per-and polyfluoroalkyl substances in human milk in China: Results of the third National Human Milk Survey (2017–2020)
Science
12 Oct 2022 | J. Hazard. Mater.
Potential hazard from PFAS exposure through breastmilk, especially from high PFOA exposure, was observed throughout China.
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Presumptive Contamination: A New Approach to PFAS Contamination Based on Likely Sources
Science
12 Oct 2022 | ES&T
A contamination model was used to create a map of presumptive PFAS contamination sites in the United States, identifying more than 57,000 sites including industrial facilities, wastewater treatment plants, current or former military sites, and airports.
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Use and release of per-and polyfluoroalkyl substances (PFASs) in consumer food packaging in US and Canada
Science
11 Oct 2022 | Chemosphere
Most food packaging does not contain intentionally added PFAS, indicating that PFAS are not necessary for food packaging, yet the thousands of tonnes of PFAS still used have the potential to contaminate the environment and waste streams.
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Swimming with PFAS in public and private pools
Science
11 Oct 2022 | Chemosphere
PFBA, PFHxA, PFHpA, PFOA, PFNA and PFBS were detected in every pool sample with most PFOA and PFOS levels above the new US EPA drinking water health advisory limits.
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Targeted analysis and total oxidizable precursor assay of several insecticides for PFAS
Science
10 Oct 2022 | JHM Letters
PFOS was detected in 6 out of 10 tested insecticides at concentrations up to 19,200,000 ppt, with 7 additional PFAS found via non-targeted techniques.
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‘Screamingly High’ Levels of PFAS in Common Insecticides, New Study Finds
News
7 Oct 2022 | EcoWatch
A study published in the November issue of the Journal of Hazardous Materials Letters gives another reason to avoid insecticides in particular: they may contain the toxic forever chemicals known as PFAS.
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An unexpected synergistic toxicity caused by competitive bioconcentration of perfluoroalkyl acid mixtures to Daphnia magna: Further promoted by elevated temperature
Science
7 Oct 2022 | Environ Pollut
High temperatures promote the bioconcentration of PFAA and resulted in the increased toxicity of PFAA mixtures in model species.
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An Integrated Approach for Determination of Total Per-and Polyfluoroalkyl Substances (PFAS)
Science
5 Oct 2022 | Environ. Sci. Technol.
This paper describes how to use methods like the total oxidizable precursor assay and suspect screening to more fully characterize PFAS present in soil and aqueous mixtures as such screenings can help inform the potential for PFAS exposure.