A monitoring tool that can prescreen aqueous film-forming foam (AFFF) for the contaminants perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) would be incredibly useful to industry. Ideally, the tool could be used onsite or in nonspecialised laboratories, and have high sensitivity, specificity and selectivity.
PFAS (per- and polyfluoroalkyl substances) are toxic synthetic chemicals known to have potential health and environmental impacts. PFAS are highly resistant to degradation and are very mobile. They are also ubiquitous because of their use in common industrial products such as firefighting foams and nonstick coatings.