Multi-polar electrodes for detection of per and polyfluoroalkyl substances using total organic fluoride

A device for deriving an amount of polyfluoroalkyl substances and perfluoroalkyl substances (PFAS) from a total organic fluoride measurement in a sample, comprising:

• remove inorganic fluoride from the sample, and preconcentrate, using an extraction, the PFAS on an extraction device, wherein the inorganic fluoride passes through the extraction device;
• digest, using a working electrode, a counter electrode, and at least two secondary electrodes between the working electrode and the counter electrode, the amount of PFAS to an amount of total organic fluoride;
• and
• determine, using an analyzer, the amount of total organic fluoride in the sample.

A device for deriving an amount of PFAS from a total organic fluoride measurement in a sample, comprising:

• a digestion chamber;
• an exclusion device;
• an ion exchange cartridge;
• an analyzer;
• a working electrode;
• a counter electrode;
• at least two secondary electrodes between the working electrode and the counter electrode;
• and
• the device for deriving a PFAS from a total organic fluoride measurement in a sample being configured to:
• remove inorganic fluoride from the sample, and preconcentrate, using an extraction, the PFAS on the extraction device, wherein the inorganic fluoride passes through the extraction device;
• digest, in a digestion chamber, using the working electrode, the counter electrode, and the at least two secondary electrodes, the at least one PFAS substance to an amount of total organic fluoride;
• and
• determine, using an analyzer, the amount of total organic fluorine in the sample.