Foam Fractionation and Electrochemical Oxidation for the Treatment of PFAS in Environmental Water Samples
This study explored the performance of a method for treating PFAS in environmental water samples.
August 4, 2023 | Chemosphere
PFAS Science Updates
Kinetics and Mechanism of Ultrasonic Defluorination of Fluorotelomer Sulfonates
This study analyzed the ability of ultrasound to degrade legacy PFAS via thermolysis. The results indicated that ultrasound efficiently degrades FTSAs and may potentially treat other classes of PFAS.
July 25, 2023 | The Journal of Physical Chemistry A
Verification Analysis for PFAS in Pesticide Products
A memorandum promulgated by U.S. EPA reports that the Analytical Chemistry Branch (ACB) of the Office of Pesticide Programs, Biological and Economic Analysis Division (BEAD) did not detect PFAS in the 10 tested pesticide products when it based its analysis on a newly developed methodology targeted towards eliminating false positive detections.
May 18, 2023 | United States EPA
Study by Harvard Researchers Says PFAS Precursors Could Contaminate Military Sites for Decades
A study by a team of Harvard University researchers says current approaches to cleaning up contamination from PFAS-based firefighting foam, known as aqueous-film forming foam (AFFF), at Defense Department (DOD) sites fail to target precursor chemicals that could continue to produce regulated PFAS for centuries, adding to questions about the pace of DOD’s efforts. “The estimated PFAS reservoir in the vadose zone and modeled flux into groundwater suggest PFAS contamination above regulatory guidelines will persist for centuries without remediation,” the study says. The vadose zone is the Earth’s terrestrial subsurface that extends from the surface to the regional groundwater table.
The researchers contend this work highlights the importance of unregulated and often overlooked precursors for total PFAS exposures near AFFF releases and their role in sustaining high concentrations of regulated terminal PFSA, especially PFBS and PFHxS. “Little is known about population-wide exposure to precursors.”
May 15, 2023 | Environmental Science & Technology
Substantial defluorination of polychlorofluorocarboxylic acids triggered by anaerobic microbial hydrolytic dechlorination
This study identifies two types of naturally occurring bacteria found in soil that breakdown a PFAS subgroup that contains one or more chlorine atoms.
May 15, 2023 | Nature Water