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PFAS: Forensic Tools: TOF, TOP Assay and Non-Target Analysis, Part 5

Event Announcement

Tuesday, Oct 20, 2020

About This Webinar:

In 2006, the United States Environmental Protection Agency (US EPA) announced the PFOA Stewardship Program, to phase out the emissions and the use of long-chain perfluorinated chemicals (PFCs) as these chemicals are persistent, bioaccumulative, and toxic. In addition, the US EPA and State agencies have developed health advisories, screening levels, and action limits for a number of Perfluoroalkyl Acids (PFAAs), making this group of compounds the risk drivers in most cases.

Current analytical methodologies measure a discrete list of approximately 40 (PFAS) compounds. Many additional PFAS are not determined as discrete compounds by existing commercial methods. Hence, we may be underestimating the PFAS mass present in the environment. There is significant pressure from the public, environmental agencies, and others to apply methodologies that more closely measure the full extent of PFAS contamination.

Eurofins implemented the TOP Assay as a solution to this problem. The TOP Assay rapidly converts PFAA precursors into PFAAs, including PFOA, replicating what micro-organisms in the environment would achieve over time. This quantifies the sum of PFAS that could be converted to PFAAs in the environment. TOP Assays have revealed that for AFFF-impacted sites, existing analytical methods only detect an estimated 30% to 50% of the total PFAA mass present as PFAA precursors.

A question and answer session will immediately follow the presentation. At the conclusion of each webinar, you will be asked for your feedback and opinions for future webinar topics to be developed by  Eurofins Environment Testing America (EETA).

October 20, 2020