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Understanding Usability of PFAS Data
May 4, 2021 @ 1:30 pm - 3:00 pm
The webinar was presented for informational purposes. The views expressed do not necessarily reflect those of each of the NEWMOA-member states and and the strategies and technologies discussed should not be considered an endorsement by NEWMOA or its members.
The webinar included the following presentation:
Understanding Usability of PFAS Data [PDF]
Dr. Nancy Rothman, Chief Executive Officer, New Environmental Horizons, Inc.
Elizabeth Denly, Quality Assurance & Chemistry Director, TRC
It is well understood that the analysis of PFAS is being performed using liquid chromatography/dual mass spectrometry (LC/MS/MS). Currently, the majority of laboratories are utilizing a modified version of EPA method 537, which was designed for drinking water samples. EPA is in the process of developing methods for non-drinking water matrices but these methods are not yet available. There is no consistency in the laboratory community with regards to the modifications that are implemented, how the samples are prepared, quality control procedures, and whether or not sample cleanups are performed. Data users need to understand the modifications laboratories are implementing or not implementing in order to determine whether data quality objectives are being achieved.
The presentation provided training on how to assess PFAS data and will provide the data user with appropriate sampling and method information to communicate effectively with a laboratory to obtain PFAS data that meets their project needs. Additionally, the presentation provided training on the impact of Quality Control (QC) issues including assessment of method and matrix QC results on PFAS data. With this information, data users will be able to evaluate the information they receive to determine the accuracy, precision, and ultimate usability of their PFAS data.