What difference can drop-in substitution actually make? A life cycle assessment of alternative water repellent chemicals
22 Nov 2021 | J. Clean. Prod.
A life cycle assessment found non-fluorinated durable water repellents for outdoor garments were environmentally preferable to fluorinated variants leading to the recommendation to phase out PFAS.
Per- and polyfluoroalkyl substances (PFASs) in airborne particulate matter (PM2.0) emitted during floor waxing: A pilot study
16 Nov 2021 | Atmos. Environ.
Significantly higher levels of PFAS were measured during floor waxing, potentially putting occupational workers at greater risk.
Biodegradation of per- and polyfluoroalkyl substances (PFAS): A review
16 Nov 2021 | Bioresour Technol
The biodegradation pathways for different types of subclasses of PFAS are summarized in two major categories, biodegradation with and without the cleavage of the C-F bond.
A New OECD Definition for Per- and Polyfluoroalkyl Substances
16 Nov 2021 | Environ Sci Technol
The Organisation for Economic Co-operation and Development and the United Nations Environment Programme expanded on their definition of PFAS to include fluorinated substances that contain at least one fully fluorinated methyl or methylene carbon atom.
Investigation of levels of perfluoroalkyl substances in freshwater fishes collected in a contaminated area of Veneto Region, Italy
16 Nov 2021 | Environ Sci Pollut Res Int
Consumption of fish more than once a month from a contaminated region of Italy might result in high exposure to PFAS.
Per- and Polyfluoroalkyl Substance Exposure Combined with High-Fat Diet Supports Prostate Cancer Progression
9 Nov 2021 | Nutrients
PFOS exposure in conjunction with a high-fat diet may contribute to prostate cancer development and increase tumor aggressiveness.
Perfluorooctane sulfonate (PFOS) triggers migration and invasion of esophageal squamous cell carcinoma cells via regulation of Zeb1
9 Nov 2021 | Drug Chem Toxicol
Environmental exposure and body accumulation of PFOS might be an important risk factor for esophagus cancer progression, one of the most deadly cancers worldwide.
Short-term exposure to perfluorotetradecanoic acid affects the late-stage regeneration of Leydig cells in adult male rats
9 Nov 2021 | Toxicol Appl Pharmacol
The short-term exposure to PFTeDA during specific windows of sex cell regeneration was associated with reduced testosterone levels and lowered sperm counts in rats.
Engineering human liver fatty acid binding protein for detection of poly- and perfluoroalkyl substances
9 Nov 2021 | Biotechnol Bioeng
A novel method of detecting selected PFAS in water (at parts per billion or million levels) by using human liver proteins was developed and implemented in field applications.
Per- and polyfluoroalkyl substance (PFAS) exposure, maternal metabolomic perturbation, and fetal growth in African American women: A meet-in-the-middle approach
9 Nov 2021 | Environ Int
Higher PFOA and PFNA blood levels in pregnant African American women were associated with reduced fetal growth.
Exposure to perfluoroalkyl substances in waste recycling workers: Distributions in paired human serum and urine
9 Nov 2021 | Environ Int
The results of this study suggest that sorters at recycling facilities may be directly exposed to PFAS and is the first to detect PFPAs in human urine.
Distribution of perfluoroalkyl acids in fish species from the Baltic Sea and freshwaters in Finland
9 Nov 2021 | Chemosphere
Moderate consumption of most Baltic fishes exceeded the tolerable weekly intake set by the European Commission for the sum of four PFAS (PFOA, PFNA, PFHxS, and PFOS).
Emerging investigator series: human CYP2A6 catalyzes the oxidation of 6:2 fluorotelomer alcohol
9 Nov 2021 | Environ Sci Process Impacts
An enzyme was found to play an important role in the indirect human exposure to bioactive and persistent PFCAs which are metabolites of 6:2 fluorotelomer alcohol.
Stability of Per- and Polyfluoroalkyl Substances in Solvents Relevant to Environmental and Toxicological Analysis
9 Nov 2021 | Environ Sci Technol
Common solvents were found to degrade PFAS during chemical analysis, potentially corrupting results.
Half-lives of several polyfluoroalkyl substances (PFAS) in cattle serum and tissues
9 Nov 2021 | Food Addit Contam Part A Chem Anal Control Expo Risk Assess
Cattle drank water contaminated with PFAS-containing fire fighting from were found to have PFOS, PFHpS, PFNA, PFDA, and PFHxS in their blood which was used to estimate half-lives for these substances.