Showing 196-210 of 433
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[Informational Webinar] EPA's Innovative Ways to Destroy PFAS Challenge
Events
23 Nov 2020
EPA is partnering with the other stakeholders, to co-sponsor a technical challenge regarding the destruction of PFAS. The challenge asks solvers to submit detailed plans for a non-thermal way of destroying PFAS in AFFF, while creating the least amount of potentially harmful byproducts with a $50,000 prize.
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Suggestions for Improving the Characterisation of Risk from Exposures to Per and Polyfluorinated Alkyl Substances (PFAS)
Science
22 Nov 2020 | Environ Toxicol Chem
Here we propose methods that consider maximizing the use of disparate data streams, seeking patterns, and proposing biological-based approaches to evidence integration towards informed criteria development.
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Comparison of extraction methods for per- and polyfluoroalkyl substances (PFAS) in human serum and placenta samples-insights into extractable organic fluorine (EOF)
Science
22 Nov 2020 | Anal Bioanal Chem
Results showed that performance, in terms of recovery, differed between the extraction methods for different PFAS; different extraction methods resulted in different EOF concentrations indicating that the choice of extraction method is important for target PFAS and EOF analysis.
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Uptake and translocation of multiresidue industrial and household contaminants in radish grown under controlled conditions.
Science
18 Nov 2020 | Chemosphere
PFAS were detected in all plant tissues and contained some of the highest bioaccumulation factors.
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Air-water interfacial adsorption coefficients for PFAS when present as a multi-component mixture
Science
17 Nov 2020 | J Contam Hydrol
Models found that PFAS mobility can be affected by the concentration and homogeneity of PFAS mixtures.
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An exploratory analysis of poly- and per-fluoroalkyl substances in pet food packaging from the United States
Science
17 Nov 2020 | Env. Tech. & Inn.
Precursors that were oxidized to PFBA were found in pet food and packaging.
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Exposure to PFAS and small for gestational age new-borns: A birth records study in Veneto Region (Italy)
Science
17 Nov 2020 | Environ Res
Living in a contaminated area by PFAS may play a role in affecting fetal growth and support the hypothesis that PFAS exposure is a risk factor for lower than average gestational growth.
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Recent progress in the detection of emerging contaminants PFASs
Science
17 Nov 2020 | J Haz. Mat.
The challenge and future directions in PFASs sensor development are discussed.
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Formation of perfluorocarboxylic acids (PFCAs) during the exposure of earthworms to 6:2 fluorotelomer sulfonic acid (6:2 FTSA)
Science
17 Nov 2020 | Sci Total Environ
Five terminal PFCA metabolites, including TFA, PFPrA, PFBA, PFPeA and PFHxA were found to be biotransformed from 6:2 FTSA in earthworms.
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Association between Prenatal Exposure to PFAS and Fetal Sex Hormones: Are the Short-Chain PFAS Safer?
Science
16 Nov 2020 | Environ Sci Technol
Prenatal exposure to PFBS and PFHpA was associated with the characteristics of reproductive toxicity.
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PFAS Exposure Pathways for Humans and Wildlife: A Synthesis of Current Knowledge and Key Gaps in Understanding
Science
16 Nov 2020 | Environ Toxicol Chem
Here we synthesize current understanding of the magnitudes and methods for assessing human and wildlife exposures to PFAS.
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Selective Associations of Recent Low Concentrations of Perfluoroalkyl Substances With Liver Function Biomarkers: NHANES 2011 to 2014 Data on US Adults Aged ≥20 Years
Science
11 Nov 2020 | J Occup Environ Med
Recent lower levels of PFOA, PFHxS, and PFNA are associated with higher serum liver functions but only among obese participants.
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Per- and Polyfluoroalkyl Substances in the Air Particles of Asia: Levels, Seasonality, and Size-Dependent Distribution
Science
11 Nov 2020 | Environ Sci Technol
PFOS distributed on specific sizes exhibited seasonal and regional dependency, while no such patterns were observed for PFOA.
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PFAS exposure and overweight/obesity among children in a nationally representative sample
Science
10 Nov 2020 | Chemosphere
Elevated PFOA concentrations were associated with overweight/obesity among children after multivariable adjustment.
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Occurrence and Distribution of Per- and Polyfluoroalkyl Substances in Tianjin, China: The Contribution of Emerging and Unknown Analogues
Science
10 Nov 2020 | Environ Sci Technol .
Field-derived sediment-water distribution coefficients of emerging PFAS are provided for the first time, confirming that cationic and zwitterionic PFASs tend to be strongly associated with sediments.