Showing 61-75 of 1070
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Final PFAS National Primary Drinking Water Regulation
Policy
10 Apr 2024
On April 10, 2024, EPA announced the final National Primary Drinking Water Regulation (NPDWR) for six PFAS.
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Life in the PFAS lane: The impact of perfluoroalkyl substances on photosynthesis, cellular exudates, nutrient cycling, and composition of a marine microbial community
Science
26 Mar 2024 | Sci Total Environ
This study investigated the effects of PFAS on microbial communities in the northwestern Gulf of Mexico, revealing that PFOS but not 6:2 FTS induced significant phototoxicity and shifts in community structure, highlighting the importance of understanding PFAS impacts on microbial ecosystems.
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Exposure to polystyrene microplastics and perfluorooctane sulfonate disrupt the homeostasis of intact planarians and the growth of regenerating planarians
Science
12 Mar 2024 | Sci Total Environ
Both microplastics and PFOS can cause DNA damage and disrupt the nervous system in freshwater planarians, and their combined exposure can exacerbate these effects, shedding light on potential environmental and health risks associated with microplastics and PFAS.
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Biosolids, an important route for transporting poly-and perfluoroalkyl substances from wastewater treatment plants into the environment: A systematic review
Science
6 Mar 2024 | Sci. Total Environ.
This review examined the presence and behavior of PFAS in wastewater treatment plants, revealing variations in PFAS concentrations across plants, the role of biological mechanisms in PFAS transformation, and the influence of factors like carbon chain length and wastewater composition on PFAS adsorption in sludge, emphasizing the need for improved management strategies to address PFAS contamination in environmental systems.
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Dynamic spatiotemporal changes of per- and polyfluoroalkyl substances (PFAS) in soil and eggs from private gardens at different distances from a fluorochemical plant
Science
27 Feb 2024 | Environ Pollut
The study conducted near a fluorochemical plant in Antwerp, Belgium, revealed higher concentrations of short-chain PFAS and their precursors in vegetable garden soil, elevated levels of long-chain PFAS in chicken enclosure soil and homegrown eggs, and temporal variations such as a 9x decrease in PFOS concentrations in soil and a 13x drop in concentrations in eggs, emphasizing the presence of localized high-concentration plumes near the plant and the necessity for ongoing monitoring and regulatory intervention.
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Integrated Analysis of Per-and Polyfluoroalkyl Substance Exposure and Metabolic Profiling of Elderly Residents Living near Industrial Plants
Science
26 Feb 2024 | Environ. Sci. Technol.
Significant associations between PFAS exposure levels and metabolic profiles were identified among those residing near industrial plants, particularly within lipid metabolism pathways, shedding light on potential adverse health effects and emphasizing the importance of understanding and mitigating these risks.
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Changes in Concentrations of Polyfluoroalkyl Substances in Human Milk Over Lactation Time and Effects of Maternal Exposure via Analysis of Matched Samples
Science
23 Feb 2024 | Environ. Sci. Technol.
Breast milk samples from 76 women post-delivery found certain PFAS compounds, particularly PFOA, PFOS, and N-MeFOSAA, with N-MeFOSAA being the highest in human milk at 3 months, suggesting an increase in PFAS concentrations in milk samples over time.
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PFAS River Export Analysis Highlights the Urgent Need for Catchment-Scale Mass Loading Data
Science
19 Feb 2024 | ES&T Letters
A study of a European river system found that wastewater treatment works contribute significantly to the total PFAS levels exported from the river, but that additional PFAS sources must also be eliminated in order to meet water quality improvement goals.
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Reproductive toxicity of PFOA, PFOS and their substitutes: A review based on epidemiological and toxicological evidence
Science
17 Feb 2024 | Environ Res
PFAS are widely recognized for their reproductive toxicity, with substitutes proving equally or more harmful; this review covers potential reproductive toxicity mechanisms for PFAS in both males and females.
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Occurrence, bioaccumulation and trophic dynamics of per- and polyfluoroalkyl substances in two tropical freshwater lakes
Science
14 Feb 2024 | Environ Pollut
PFAS were measured in different fish species in two lakes in Nigeria, identifying the presence of novel PFAS, diSAMPAP and 9CL-PF3ONS, and documenting the role of urbanization on PFAS in the environment for the first time in Africa.
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Associations of per- and polyfluoroalkyl substances with maternal metabolic and inflammatory biomarkers in early-to-mid-pregnancy
Science
10 Feb 2024 | Environ Res
Exposure to PFAS during early-to-mid pregnancy was associated with decreased insulin levels, increased HDL cholesterol, and alterations in inflammatory markers, suggesting potential metabolic and inflammatory disruptions that may impact maternal and fetal health.
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Perfluorooctanesulfonic acid (PFOS) disrupts cadherin-16 in the developing rat thyroid gland
Science
6 Feb 2024 | Curr Res Toxicol
PFOS exposure in rodents may disrupt thyroid hormone system development, potentially affecting growth and neurodevelopment, as evidenced by altered gene expression patterns in hormone levels and follicular integrity.
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Distribution and release of PFAS from AFFF-impacted asphalt: How does it compare to concrete?
Science
5 Feb 2024 | J. Hazard. Mater.
AFFF-impacted asphalt and concrete were found to potentially leach PFAS into the environment, with 6:2 FTS and PFOS identified as the dominant PFAS in the surface layer and runoff, asphalt exhibited a higher release rate compared to concrete.
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Association between Perfluoroalkyl Substances in Follicular Fluid and Polycystic Ovary Syndrome in Infertile Women
Science
26 Jan 2024 | MDPI
A clinical study revealed a positive relationship between PFOA levels in follicular fluid and increased odds of polycystic ovary syndrome, suggesting PFOA as a potential risk factor for this endocrine disease in women.
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Occurrence and pattern of legacy and emerging per-and Poly-FluoroAlkyl substances (PFAS) in eggs of loggerhead turtle Caretta caretta from western Mediterranean
Science
22 Jan 2024 | Environ. Pollut.
Many PFAS were found in loggerhead turtle eggs off the coast of Italy, including emerging PFAS, and the highest concentrations in some eggs may be due to fluoropolymer-based marine litter that turtles may ingest.