Automated PFAS Solvent Extraction of Difficult Food Matrices Common to the Northeast

The widespread and persistent nature of PFAS (Per- and Polyfluoroalkyl Substances) within our food chain continues to drive concern and an increased need for accurate testing. As more and more regulations are implemented with action limits that continue to decrease, the challenges that are associated with testing (including contamination and human error) continue to grow. Having a harmonized method to accurately determine the PFAS content in food (and other matrices) is important to ensure long-term detection and regulation. New England Clam Chowder is commonly consumed throughout the northeast. Clam chowder contains a variety of ingredients, such clams, potatoes and cream. These ingredients are very different in composition, leading to challenges when analyzing these different food types for PFAS. The solvent extraction of PFAS from any matrix is known to be difficult, given the susceptibility to contamination and the low levels in which PFAS compounds are present. Existing solvent extraction techniques are predominantly manual methods that are not rapid, simple, or efficient. In this study the EDGE PFAS™, an automated solvent extraction system, is explored. This system performs an efficient extraction of PFAS compounds from a variety of ingredients in clam chowder in one simple process. Upon completion, the final extract is filtered and ready for any minimal cleanup that may be required, as well as analysis. Excellent recovery with tight reproducibility is presented. The EDGE PFAS method offers a rapid, simple, and efficient solvent extraction solution for PFAS testing.