Evaluation of per- and polyfluoroalkyl substances (PFAS) in landfill liquids from Pennsylvania, Colorado, and Wisconsin
19 Mar 2024 | Chemosphere
Average PFAS levels in landfills from Pennsylvania, Colorado, and Wisconsin were 6,900, 22,000, 280, and 260 ppt in leachate, gas condensate, stormwater, and groundwater, respectively, with variations attributed to landfill design and local climate and higher PFAS levels in leachate exposed to open air and in groundwater near landfills without bottom liners.
Per- and Polyfluoroalkyl Substances in Food Packaging: Migration, Toxicity, and Management Strategies
19 Mar 2024 | Environ Sci Technol
This study systematically maps evidence of PFAS in migrates and extracts of food contact materials, revealing the presence of 68 PFAS, predominantly perfluorocarboxylic acids and fluorotelomer-based compounds, highlighting the need for international regulations to limit PFAS as a group in food packaging for human and environmental safety.
Two for the Price of One: Deriving Per-and Polyfluoroalkyl Substances (PFAS) Fillet and Whole-Body Conversion Equations in Fish
18 Mar 2024 | ES&T Letters
This study developed conversion equations between filet and whole-body concentrations of PFAS in fish from New York State, crucial for both human health advisories and ecological risk assessments, with conversion factors consistent across multiple PFAS chemicals but less consistent across species.
Temporal variability and sources of PFAS in the Rio Grande, New Mexico through an arid urban area using multiple tracers and high-frequency sampling
18 Mar 2024 | Emerg. Contam.
Significant temporal and spatial variability of PFAS were found in the Rio Grande, with notable increases in PFAS from urban runoff and wastewater effluent, and researchers demonstrated the use of longer-term passive samplers to compare PFAS concentrations in water bodies against one-time measurements.
Prenatal Exposure to Poly/Perfluoroalkyl Substances and Risk for Congenital Heart Disease in Offspring
18 Mar 2024 | J. Hazard. Mater.
PFAS exposure during pregnancy was found to potentially increase the risk of congenital heart disease, the most common type of birth defect worldwide.
Novel Meta-Diamide Compounds Containing Sulfide Derivatives Were Designed and Synthesized as Potential Pesticides
17 Mar 2024 | Molecules
C4 sulfonamido derivatives were the dominant PFAS compounds in semiconductor manufacturing wastewater, signaling a shift towards these alternatives and the importance of measuring more than just PFAAs.
Per-and Polyfluoroalkyl Substance Exposure Risks in US Carceral Facilities
15 Mar 2024 | AJPH
To evaluate the risk of exposure to PFAS among the US incarcerated population, this study analyzed the geographic proximity of carceral facilities to known or likely PFAS contamination sites, finding that 5% of facilities are located within the same watershed boundaries as PFAS contamination sources, with implications for health inequities and the need for environmental monitoring in prisons.
Bioaccumulation of Perfluoroalkyl Sulfonamides (FASA)
14 Mar 2024 | Sci Technol Lett.
This study reports high FASA concentrations in fish sampled next to aqueous film-forming foams contaminated sites. Preliminary findings on toxicity suggest an urgent need for FASA to be considered by fish advisory programs.
Exposure to polystyrene microplastics and perfluorooctane sulfonate disrupt the homeostasis of intact planarians and the growth of regenerating planarians
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.
Environmental impact of PFAS: Filling data gaps using theoretical quantum chemistry and QSPR modeling
9 Mar 2024 | Environ. Int.
Utilizing physics-based methods and data-driven models, researchers predicted environmental parameters to address gaps in understanding such as the bioaccumulation potential, contributing to a better understanding of PFAS behavior in the environment.
PFAS alters placental arterial vasculature in term human placentae: A prospective pregnancy cohort study
9 Mar 2024 | Placenta
Maternal prenatal exposure to PFAS was found to affect placental vascularization with higher PFAS concentrations associated with reduced surface vasculature, potentially contributing to adverse birth outcomes.
A Comprehensive Review of Novel Adsorbents for Per-and Polyfluoroalkyl Substances in Water
8 Mar 2024 | ACS ES&T Water
This review examines recent studies on new adsorbent materials for PFAS, covering fundamental mechanisms of PFAS adsorption, evaluating materials such as carbon nanotubes and polymers, and providing insights into strategies for designing effective PFAS removal solutions.
Biosolids, an important route for transporting poly-and perfluoroalkyl substances from wastewater treatment plants into the environment: A systematic review
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.
Effect modification by maternal vitamin D status in the association between prenatal exposure to per- and polyfluoroalkyl substances and neurodevelopment in 2-year-old children
5 Mar 2024 | Environ Int
In a Chinese birth cohort, researchers investigated how prenatal exposure to PFAS affects childhood neurodevelopment, finding that while PFAS exposure was linked to lower language scores and increased risk of delay overall, the impact varied based on maternal vitamin D levels.
Prenatal exposure to mixtures of per- and polyfluoroalkyl substances and organochlorines affects cognition in adolescence independent of postnatal exposure
5 Mar 2024 | Int J Hyg Environ Health
This study investigated the cognitive effects of prenatal exposure to PFAS and organochlorines, finding that higher prenatal exposure to these chemicals, particularly PFHxS and PFNA, is associated with improved sustained and selective attention during adolescence, regardless of exposure levels at adolescence. However, the authors suggest the results should be interpreted with caution due to limited understanding of biological pathways and prior studies showing neurotoxic effects from PFAS.