As PFAS analysis pushes into trace-level territory, laboratories face a fast-moving mix of vast chemical scope, method fragmentation, and background contamination.
Per- and polyfluoroalkyl substances (PFAS) have carried two very different nicknames over their industrial lifetime. Early on, they were "miracle chemicals," valued for the nonstick, waterproof, and stain-resistant properties behind products such as Teflon and Gore-Tex. More recently, they have been labeled "forever chemicals," a term that reflects their environmental persistence and the concern it has raised among regulators, toxicologists, and the public. Between those two identities sits the separation scientist, tasked with finding and quantifying compounds that may number in the millions, frequently at trace or sub-trace concentrations.
