EPA has published only one test method for Per- and Polyfluoroalkyl Substances (PFAS) – for drinking water. Given the growing concern regarding PFAS in a wide variety of matrices, and the difficulties associated with testing, it is important to develop a data quality approach to ensure that data being collected are reliable.
EPA has promulgated a validated test method for PFAS in only one matrix, drinking water (EPA Method 537), yet there are also concerns about PFAS in ground water, soil, sediment, biota, fish and other animal tissue, and a variety of consumer products. Testing in these various matrices poses a variety of challenges. Specifically, PFAS test methods are complex and subject to interferences, contamination and false positive issues. Gradient chemists collaborate routinely with analytical laboratories to address these challenges and can help develop data quality approaches to ensure that PFAS data, in any matrix, are reliable and defensible.
Gradient is an environmental and risk sciences consulting firm renowned for our specialties in Toxicology, Epidemiology, Risk Assessment, Product Safety, Contaminant Fate and Transport, Industrial Hygiene, Geographic Information Systems, and Environmental/Forensic Chemistry. We employ sound science to assist national and global clients in resolving their complex problems relating to chemicals in the environment, in the workplace, and in consumer products.