Noise-Reduced Quantitative Fluorine NMR Spectroscopy Reveals the Presence of Additional Per- and Polyfluorinated Alkyl Substances in Environmental and Biological Samples When Compared with Routine Mass Spectrometry Methods
15 Feb 2022 | Anal Chem
Novel techniques were applied to increase the sensitivity of fluorine NMR such that more PFAS were found in aqueous samples compared to traditional LC-MS methods, suggesting NMR as a simple and accurate tool to measure total organic fluorine.
Concentrations of per- and polyfluoroalkyl substances (PFAS) in human placental tissues and associations with birth outcomes
15 Feb 2022 | Chemosphere
All tested placenta samples contained detectable PFAS, including PFOS, PFOA, PFNA, and PFDA in >96% samples, and placental PFOS was associated with lower birth weight for in male infants and higher birth weight in female infants.
Human exposure to F-53B in China and the evaluation of its potential toxicity: An overview
15 Feb 2022 | Environ Int
A review of a novel PFAS demonstrated hepatotoxicity, endocrine disruption, reproductive, and developmental toxicity, and suggested further research given the extreme biopersistence of F-53B.
Sulfonamide functional head on short-chain perfluorinated substance drives developmental toxicity
15 Feb 2022 | iScience
FBSA significantly disrupted normal gene expression in a human model species while other short-chain PFAS induced changes in larval behavior.
Fire Test Performance of Eleven PFAS-Free Class B Firefighting Foams Varying Fuels, Admixture, Water Types and Foam Generation Techniques
14 Feb 2022 | Fire Tech.
PFAS-free firefighting foams were found to meet performance requirements depending on the foam generation technique and the type of fuel or water on which the foams were applied.
Bioremediation of perfluorochemicals: current state and the way forward
7 Feb 2022 | Bioprocess Biosyst Eng
This review examines the efficiencies of the different bacterial, plant, and fungal species in PFAS bioremediation under different conditions, their limitations, and their improvement.
Hepatic Fatty Acid Profiles Associated with Exposure to Emerging and Legacy Halogenated Contaminants in Two Harbor Seal Populations across the North Atlantic
7 Feb 2022 | ES&T
Several flame retardants and PFAS chemicals were significantly associated with changes in liver fatty acid profiles in seals from Maine and Sweden.
Release of perfluoroalkyl substances from AFFF-impacted concrete in a Firefighting Training Ground (FTG) under repeated rainfall simulations
7 Feb 2022 | J. Hazard. Mater.
High concentrations of 5 PFAS were measured in concrete cores removed from firefighting training grounds, and simulated rainfall released approximately 1% of the total PFAS mass in the concrete surface layer, leading researchers to believe that concrete can be a secondary source of PFAS contamination.
Exposure pathways and bioaccumulation of per- and polyfluoroalkyl substances in freshwater aquatic ecosystems: Key considerations
7 Feb 2022 | Sci Total Environ
PFAS concentration, dissolved organic matter, sediment organic matter, and biotransformation of precursor PFAS tended to significantly impact reported bioaccumulation metrics.
Per- and polyfluoroalkyl substances in the environment
7 Feb 2022 | Science
This review summarizes the sources, transport, degradation, and toxicological implications of the megatonne of PFAS produced yearly, highlighting the importance of investigating potential PFAS replacements, the importance of lifecycle considerations, and that PFAS remediation efforts are still in their infancy.
Prenatal Exposure to Per- and Polyfluoroalkyl Substances and Facial Features at 5 Years of Age: A Study from the Danish National Birth Cohort
1 Feb 2022 | Environ Health Perspect
Prenatal PFAS exposure might influence the development of fetus heads and faces, especially when coupled with alcohol consumption.
A review of PFAS fingerprints in fish from Norwegian freshwater bodies subject to different source inputs
1 Feb 2022 | Environ Sci Process Impacts
Source tracking of PFAS exposure was most successful using fish livers, with fingerprints from AFFF dominated by PFOS and PFSA and fingerprints from paper production dominated by PFCAs and high ∑PFAS and PFOS.
Serum levels of perfluoroalkyl substances (PFAS) and body composition - A cross-sectional study in a middle-aged population
1 Feb 2022 | Environ Res
PFOA, PFNA, and PFDA were inversely related to fat mass measurements in women but not men, while PFOS and PFHxS had no consistent associations with body composition.
Gestational exposure to GenX induces hepatic alterations by the gut-liver axis in maternal mice: A similar mechanism as PFOA
1 Feb 2022 | Sci Total Environ
Gestational exposure to PFOA or GenX induced similar disease indicator changes in maternal livers.
PFAS Molecules: A Major Concern for the Human Health and the Environment
25 Jan 2022 | Toxics
This review summarizes the current knowledge on PFAS chemistry uses, occurrence, and environmental fate, with a particular emphasis on effects on humans as well as an analysis of the European Union’s efforts to regulate and remediate PFAS.