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Sample digestion for AOF determination according to EPA Method 1621

Analytik Jena GmbH+Co. KG
5 Mar 2026

Per‑ and polyfluorinated alkyl substances (PFAS) are persistent 'forever chemicals' that accumulate in water, soil, organisms, and the food chain, creating an urgent need for sensitive, reliable monitoring. Yet the vast diversity of PFAS compounds and their widespread distribution make comprehensive detection difficult.

Discover why the adsorbable organically bound fluorine (AOF) sum parameter has become an essential screening tool, and understand the principles behind its determination, including adsorption, high‑temperature pyrohydrolysis, and ion chromatography. Plus, explore how flexible digestion systems, such as the ICprep, support accurate AOF analysis in line with EPA Method 1621, helping laboratories strengthen PFAS surveillance programs.

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ICprep Series

Analytik Jena GmbH+Co. KG

Discover the affordable solution for AOF sample preparation with ICprep. Effortlessly prepare your samples for ion chromatography and other detection techniques while enhancing lab productivity through high sample throughput, streamlined workflows, and maximum flexibility.

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Ion ChromatographyIon chromatography, also known as ion exchange chromatography, is a high-performance liquid chromatographic technique used for the separation and identification of ions or polar molecules in a sample, including proteins, nucleotides and amino acids. Equipment includes ion exchange columns, ion exclusion columns, ion chromatography systems, pumps, and detectors. Find the best ion chromatography equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity.  Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.PFASEnvironmental AnalysisEnvironmental analysis describes a variety of tests that determine the effect of chemicals, processes and particulates such as persistent organic pollutants (POPs) have on the environment.

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Sample digestion for AOF determination according to EPA Method 1621