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The Analysis of Polyfluorinated Alkyl Substances (PFAS) – Challenges and Best Practices

Event Announcement

Tuesday, Dec 19, 2017

PFASs are a family of synthetic compounds containing thousands of chemicals formed from carbon (C) chains with fluorine (F) attached to these chains. The C-F bond is the shortest and strongest bond in nature, and is responsible for most of the unique and useful characteristics of these compounds. Perfluorooctane sulfonate (PFOS) and Perfluorooctanoic acid (PFOA) are fully fluorinated organic compounds and are the most common PFASs produced in the United States. PFOS and PFOA are used in a wide variety of industrial and commercial products such as textiles, leathers, aqueous film forming foams (AFFF), metal plating, photo lithography, semi-conductors, paper and food packaging, coating additives, cleaning products and pesticides.

PFOS and PFOA are persistent in the environment and resistant to typical environmental degradation processes. As a result, they are widely distributed and are found in soil, sediments, groundwater, air and tissue across the United States. According to U.S. EPA, PFOA and PFOS pose potential adverse impacts to the environment and human health due to the bio accumulative and mobile nature of the compounds.

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), by December 31st, 2015.  In addition, the US EPA and state agencies have developed health based advisories or screening levels as these chemicals are persistent, bio accumulative and toxic.  The chemistry and analysis of PFASs is unique, interesting and challenging.

In this presentation, we will discuss PFAS generation, formation and environmental release to sampling and analysis.  We will also discuss the current regulatory status of these chemicals.

Topics Presented:

Part 1 - Introduction to PFASs

  • What are PFASs?
  • Nomenclature/Chemistry
  • Sources, Timeline, Formation
  • Exposure, Toxicity and Risk
  • Regulatory Review

Part 2 - Analytical Best Practices

  • Analytical Methods review
  • Why so much variability?
  • How do we reduce variability?
  • New DAI Capability
  • Future Concerns - TOP Assay
  • Capabilities and Questions?

Who Should Attend?

  • Consulting and Engineering firms
  • Environmental professionals currently working on sites with PFAS concerns
  • Environmental professionals looking for more knowledge about PFASs

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 TestAmerica.

December 19, 2017