Multimedia and Full-Life-Cycle Monitoring Discloses the Dynamic Accumulation Rules of PFAS and Underestimated Foliar Uptake in Wheat near a Fluorochemical Industrial Park
18 Sep 2024 | Environ. Sci. Technol.
PFAS contamination near a major industrial park in China, particularly from airborne deposition, has led to significant accumulation in soil and wheat, with spray irrigation increasing PFAS absorption in wheat compared to flood irrigation. Local residents have high exposure risks through wheat consumption and air inhalation.
Storms mobilize organophosphate esters, bisphenols, PFASs, and vehicle-derived contaminants to San Francisco Bay watersheds
18 Sep 2024 | Environ Sci Process Impacts
Stormwater runoff in San Francisco Bay watersheds contains several PFAS and flame retardants, with some concentrations exceeding safe levels, posing significant toxicity risks to aquatic ecosystems.
Levels and trends of persistent organic pollutants in human populations living in the Arctic
17 Sep 2024 | Int J Circumpolar Health
Long-chain PFAS, such as PFNA and PFDA, are increasing in Arctic populations, especially in Greenland and Nunavik, due to their bioaccumulation in marine wildlife, posing significant health risks.
Per-and polyfluoroalkyl substances (PFAS) in drinking water in Southeast Los Angeles: Industrial legacy and environmental justice
16 Sep 2024 | Sci. Total Environ.
PFAS were detected in 30% of tap water samples from California, with the highest concentrations found in low-income, predominantly Latino communities in heavily industrialized areas of Southeast Los Angeles, highlighting the need for improved water testing and regulations to protect vulnerable populations.
Exploring the variability of PFAS in urban sewage: a comparison of emissions in commercial versus municipal urban areas
13 Sep 2024 | Environ Sci Process Impacts
PFOS and 6:2 FTS concentrations were significantly higher in wastewater from commercial areas, with median loads exceeding 0.9 μg per person per day, while municipal areas had lower levels, indicating that commercial activities are a major source of PFAS emissions in urban wastewater.
Development, validation, and clinical assessment of a liquid chromatography-tandem mass spectrometry serum assay for per- and polyfluoroalkyl substances (PFAS) recommended by the National Academies of Science, Engineering, and Medicine (NASEM)
13 Sep 2024 | Anal Bioanal Chem
In 2022, new guidelines recommended measuring nine PFAS compounds in blood, and in this study, 82.2% of samples had concentrations between 2 and 20 ng/mL, with a lower median PFAS level than previous national surveys, indicating a potential decrease in exposure or differences in population exposure patterns over time.
Maternal Exposure to Per- and Polyfluoroalkyl Substances and Offspring Chromosomal Abnormalities: The Japan Environment and Children's Study
11 Sep 2024 | Environ Health Perspect
Maternal exposure to certain PFAS chemicals, particularly PFOS, may be associated with an increased risk of chromosomal abnormalities in offspring, though further research is needed due to potential selection bias.
Have per and polyfluoroalkyl substances (PFAS) infiltrated Florida's freshwater springs?
9 Sep 2024 | Sci. Total Environ.
PFAS chemicals were detected in over 60% of water samples from Florida's freshwater springs, raising concerns about potential health risks for those relying on these springs for drinking water, and highlighting the need for further research on contamination pathways.
It’s raining PFAS in South Florida: Occurrence of per-and polyfluoroalkyl substances (PFAS) in wet atmospheric deposition from Miami-Dade, South Florida
9 Sep 2024 | Atmos. Pollut. Res.
Rainwater in Florida contained significant levels of PFAS chemicals, including PFBA, PFNA, PFOS, and PFOA, particularly during the dry season, and analysis suggested both local and distant sources of contamination.
Nontarget Analysis Combined with TOP Assay Reveals a Significant Portion of Unknown PFAS Precursors in Firefighting Foams Currently Used in China
9 Sep 2024 | Environ. Sci. Technol.
Researchers identified 54 PFAS compounds, including seven novel ones, in Chinese firefighting foams, with some meeting persistence, bioaccumulation, and toxicity criteria, and advanced analysis revealed additional PFAS precursors that were previously undetected.
Association between family economic situation and serum PFAS concentration in American adults with hypertension and hyperlipemia.
5 Sep 2024 | Sci Rep
Higher household income in adults with high cholesterol and related conditions was associated with increased blood levels of PFAS, with obesity significantly influencing this connection.
Assessment of Per-and Polyfluoroalkyl Substances (PFAS) in Traditional, Organic and Protein Flours
3 Sep 2024 | Exposure and Health
Flours, including traditional, organic, and protein varieties, contain detectable levels of specific PFAS like PFOA and PFDA, potentially contributing significantly to overall PFAS exposure, yet current regulations lack specific safety limits for these contaminants in flours.
The unique distribution pattern of PFAS in landfill organics
3 Sep 2024 | J. Hazard. Mater.
PFAS chemicals from decomposing landfill waste predominantly accumulate at middle depths within a landfill, with a strong correlation between total PFAS, total carbon, and dissolved organic matter in landfill organics.
Silicone Wristbands as a Personal Passive Sampler to Evaluate Indoor Exposure to Volatile and Non-volatile PFASs.
3 Sep 2024 | Environ Sci Technol
Silicone wristbands were used to measure personal exposure to PFAS chemicals, with gender, age, and time spent at home influencing individual exposure levels. For some PFAS, indoor air and skin contact were found to be significant sources of exposure.
Exposure to Per- and Polyfluoroalkyl Substances and Timing of Puberty in Norwegian Boys: Data from the Bergen Growth Study 2
3 Sep 2024 | Environ Sci Technol
Higher levels of PFAS chemicals, including PFOS, PFOA, PFNA, and PFHxS, were associated with delayed puberty in Norwegian boys, as measured by testicular volume and testosterone levels, with some PFAS showing stronger links to later pubertal onset.