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• Rapid Characterization of Emerging Per- and Polyfluoroalkyl Substances in Aqueous Film-Forming Foams Using Ion Mobility Spectrometry-Mass Spectrometry

  Science

  24 Nov 2020 | Environ Sci Technol

  Using analytical chemistry techniques PFAS in AFFF were rapidly characterized.

• [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.  

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.