Desulfonation and defluorination of 6:2 fluorotelomer sulfonic acid (6:2 FTSA) by Rhodococcus jostii RHA1: Carbon and sulfur sources, enzymes, and pathways

The compound 6:2 FTSA (6:2 Fluorotelomer Sulfonic Acid) is an important PFAS as it is used in a majority of contemporary products including AFFF formulations and chromium plating anti-mist solutions. This study shows that used microorganisims are able to completely degrade the 6:2 FTSA rapidly leading to a series of PFAS terminal metabolites. All parties…

Characterization of Per- and Polyfluorinated Alkyl Substances Present in Commercial Anti-fog Products and Their In Vitro Adipogenic Activity

High concentrations of PFAS were detected in all measured anti-fog products. January 10, 2022 | Environmental Science & Technology

A New OECD Definition for Per- and Polyfluoroalkyl Substances

The report presents a revised, broadly inclusive PFAS definition: “PFASs are defined as fluorinated substances that contain at least one fully fluorinated methyl or methylene carbon atom (without any H/Cl/Br/I atom attached to it), i.e., with a few noted exceptions, any chemical with at least a perfluorinated methyl group (−CF3) or a perfluorinated methylene group…

Per- and polyfluoroalkyl substances (PFASs) in airborne particulate matter (PM2.0) emitted during floor waxing: A pilot study

This study examines PFAS emissions during professional floor stripping/waxing and their potential for occupational exposures. In total, ten PFASs were detected in PM2.0 collected during floor stripping/waxing. November 16, 2021 | Atmospheric Environment