Showing 241-255 of 1070
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Uptake of individual and mixed per- and polyfluoroalkyl substances (PFAS) by soybean and their effects on functional genes related to nitrification, denitrification, and nitrogen fixation
Science
29 Jul 2022 | Sci. Total Environ.
The synergistic effect of a PFAS mixture increased the uptake of individual PFAS in soybeans, which led to changes in genes involved in the nitrogen cycle.
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Increasing Accumulation of Perfluorocarboxylate Contaminants Revealed in an Antarctic Firn Core (1958–2017)
Science
26 Jul 2022 | ES&T
PFCA and PFBA accumulation in snow increased, and although chemical fluxes of PFOA and PFNA peaked in 2009–2013, there is little evidence of a decline in PFAAs despite supposed recent global curtailments in their production.
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Next Generation Per-and Poly-Fluoroalkyl Substances: Status and Trends, Aquatic Toxicity, and Risk Assessment
Science
19 Jul 2022 | EEH
Future uses of PFAS remain uncertain in the face of governmental regulations and production bans, but 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.
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Across the US, towns warn of toxic PFAS chemicals in drinking water. Here's what to know
News
16 Jul 2022 | USA Today
In June the EPA released health advisories for chemicals PFOS and PFOA, which have been linked to cancer and other ailments, leaving many Americans to wonder if they're in danger.
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Some firetrucks still carry toxic PFAS foam
News
11 Jul 2022 | The Day
Multiple fire stations in Connecticut still have trucks that contain banned firefighting foam in their tanks that can’t be used because of its toxicity, mostly due to a lack of funding to remove the poisonous substance.
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Associations of prenatal exposure to perfluoroalkyl substances with preterm birth: A family-based birth cohort study
Science
7 Jul 2022 | Environ Res
Higher family-level PFNA and PFDA exposure were associated with greater preterm birth risk, but the results on an individual level were contradictory.
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The Conundrum of the PFOA human half-life, an international collaboration
Science
1 Jul 2022 | RTP
The Alliance for Risk Assessment developed an international collaboration to explore human half-life of perfluorooctanoate.
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Exposure to perfluoroalkyl substances and neonatal immunoglobulin profiles in the upstate KIDS study (2008-2010)
Science
1 Jul 2022 | Environ Pollut
Early exposure to PFOA and PFOS may disrupt neonatal immunoglobulin levels, weakening neonatal immune systems.
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Global patterns and temporal trends of perfluoroalkyl substances in municipal wastewater: A meta-analysis
Science
30 Jun 2022 | Water Res
Serum PFHxS, Sm‐PFOS, n‐PFOS, n‐PFOA, and PFNA concentrations were increased in at least two of four fire departments compared to NHANES national data.
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Vermont-wide Assessment of Anthropogenic Background Concentrations of Perfluoroalkyl Substances in Surface Soils
Science
25 Jun 2022 | J. Hazard. Mater.
PFOS was the most dominant substance followed by PFNA and PFOA in all soil samples.
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2022 Interim Updated PFOA and PFOS Health Advisories
Policy
15 Jun 2022
The health advisory levels for PFOA and PFOS were greatly decreased, indicating that negative health effects may occur with concentrations of PFOA or PFOS in water that are near zero.
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Occurrence, distribution, and input pathways of per-and polyfluoroalkyl substances in soils near different sources in Shanghai
Science
13 Jun 2022 | Environ. Pollut.
Many PFAS were detected throughout soils, with highest concentrations near fire stations and industrial areas.
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Early-pregnancy plasma per- and polyfluoroalkyl substance (PFAS) concentrations and hypertensive disorders of pregnancy in the Project Viva cohort
Science
6 Jun 2022 | Environ Int
Exposure to certain PFAS may increase the odds of gestational hypertension during pregnancy, with potential implications for maternal and child health outcomes.
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Estimated daily intake of per- and polyfluoroalkyl substances related to different particle size fractions of house dust
Science
6 Jun 2022 | Chemosphere
Children’s estimated daily intake for the sum of PFOA, PFNA, PFHxS, and PFOS from house dust exposure is close to the tolerable weekly intake value presented by the European Union.
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Are resource recovery insects safe for feed and food? A screening approach for bioaccumulative trace organic contaminants
Science
1 Jun 2022 | Sci. Total Environ.
Four PFAS (PFBA, PFOA, PFBS, and PFOS) did not bioaccumulate in larvae, and non-target analysis revealed emerging PFAS present in larvae and almond hulls.