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"Forever chemicals"  are a class of nearly 10,000 compounds including per- and polyfluorinated alkyl substances (PFASs) and other perfluorinated compounds (PFCs). The accumulation of PFASs in the environment leads to their presence in the food chain, especially for long-chain compounds such as perfluorooctanoic acid (PFOA, or "C8") and perfluorooctane sulfonic acid (PFOS). The sheer amount of forever chemicals increases by the year, and little information is known about how the majority of these compounds affect humans and the environment. These substances are a challenge to monitor individually and quantify in low concentrations, even in drinking water. Expensive analytical instrumentation and experience is required to determine a small selection of individual PFASs, and such analyses aretime-consuming and difficult to validate.

A large fraction of synthetic organofluorine substances is covered by the sum of all adsorbable organic fluorine (AOF) in waters. Non-targeted screening of AOF with combustion ion chromatography (CIC) is faster, easier, and a more robust alternative.

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Combustion Ion Chromatography from Metrohm is flexible, straightforward, fast and reliable method for PFAS analysis. Our instrumentation covers a wide scope of applications, and complies with international norms and standards.

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White Paper: Screening for per- and polyfluorinated alkyl substances (PFASs) in water

Application Note: Adsorbable organically bound halogens analysis as per new DIN 38409-59

Application Note: Monitoring PFASs in water sources

Application Note:  Fast analysis of AOX in waters by CIC

Webinar: Monitoring PFAS and other organically bound halogens in water and wastewater