September Monthly Meeting

September Monthly Meeting

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Perfluoroalkyl Substances (PFAS) are a large family of synthetic chemicals used in a wide variety of products including fire-fighting foams, food packaging, and non-stick coatings. These compounds are also present in standard environmental sampling materials such as Teflon™  tubing and pump parts or other common items such as food wrappers, personal care products, or water resistant clothing. In May 2016 the U.S. EPA Health Advisory Levels were lowered to 70 ng/L (parts-per-trillion) and some states have set much lower limits for allowable drinking water concentrations. Analysis to sub-part-per-trillion levels is commonly required. The concentrations at which PFAS must be analyzed and the ubiquity of these compounds in common products require special precautions be taken to ensure, and demonstrate, that samples are not biased during collection, transport, and analysis. Current state of the practice sampling and analysis considerations will be described in this presentation.

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September 20, 2017