Science

Estimating Environmental Hazard and Risks from Exposure to Per- and Polyfluoroalkyl Substances (PFAS): Outcome of a SETAC Focused Topic Meeting

2 Jun 2020 | Environ. Toxicol. Chem.

A SETAC Focus Topic Meeting and workshop entitled Environmental Risk Assessment of PFAS convened 12-15 August 2019 in Durham, North Carolina, and brought together experts from around the globe to highlight recent advances in research pertinent to evaluating environmental and human health risks from exposures of PFAS.

Subsurface transport potential of perfluoroalkyl acids (PFAAs): Column experiments and modeling

1 Jun 2020 | J. Cont. Hyd.

Models incorporating mass transfer coefficients led to improved prediction of PFAS breakthrough.

Synergistic Effect of Sodium p-Perfluorononenyloxy benzenesulfonate and Alkanolamide Compounding System Used as Cleanup Additive in Hydraulic Fracturing

28 May 2020 | Ene & Fuels

PFAS found to lower interfacial tension of the residual fluid, allowing for better cleanup of fluids used in hydraulic fracking for oil and natural gas.

Solvent Suitability for HFPO-DA (“GenX” Parent Acid) in Toxicological Studies

27 May 2020 | ES&T L

GenX was found to degrade in common laboratory solvents suggesting the need for caution when performing or using data from toxicity assessments on it and other closely related PFAS.

Removal of per- and polyfluoroalkyl substances (PFASs) in a full-scale drinking water treatment plant long-term performance of granular activated carbon (GAC) and influence of flow-rate

27 May 2020 | Water Res.

The results and methods presented in this study give drinking water providers valuable tools for the operation of a full-scale treatment train for the removal of PFAS in contaminated raw water.

Perfluoroalkyl Substances Exposure and Hearing Impairment in US Adults

27 May 2020 | Environ. Res.

PFNA and PFDA were associated with high-frequency hearing impairment, while PFOS and PFOA were not.

Interactions of perﬂuorooctanesulfonate (PFOS) and 6:2 chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA) with human serum albumin (HSA): A comparative study

27 May 2020 | Chem. Res. Toxicol.

The stronger binding affinity of 6:2 Cl-PFESA to human blood cells may contribute to its higher bioaccumulation potential than PFOS.

Integrative omics analyses uncover the mechanism underlying the immunotoxicity of perfluorooctanesulfonate in human lymphocytes

27 May 2020 | Chemosphere

The findings of this study offer insight into the molecular mechanisms underlying the immunotoxicity of PFOS and open the potential of using the identified PFOS-responsive genes and lipids as biomarkers for risk assessment.

Legacy and emerging per- and polyfluoroalkyl substances (PFASs) in the coastal environment of Korea: Occurrence, spatial distribution, and bioaccumulation potential

27 May 2020 | Chemosphere

Seawater was dominated by short-chained PFASs as a prompt reflection of regulation, while the sediment and bivalves were dominated by long-chained PFASs.

Screening new persistent and bioaccumulative organics in China's inventory of industrial chemicals

27 May 2020 | Environ. Sci. Technol.

Sixty-nine organofluorine compounds with three or more perfluorinated moieties, were found unique to the chemical Inventory of Existing Chemical Substances of China lists.

Understanding and Managing the Potential By‐Products of PFAS Destruction

26 May 2020 | Ground. Mon. & Rem.

Based on the available technologies relevant to PFAS destruction, complex aqueous solutions containing high concentrations of PFAS have the potential to generate either known short-chain PFAAs or other secondary effects on water quality.

Per- and polyfluoroalkyl substances (PFASs) in blood of captive Siberian tigers in China: Occurrence and association with biochemical parameters

19 May 2020 | Env Poll

Ten PFASs were detected in the blood of captive Siberian tigers, including PFOS alternative 6:2 Cl-PFESA, primarily from the consumption of PFAS-contaminated meat.

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