Detection of per and polyfluoroalkyl substances using total organic fluoride
AssigneeHach Company
InventorsVishnu Vardhanan RAJASEKHARAN, Cary Burton JACKSON, Matthew Ryan SALZER, Dan Jonathan KROLL
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Abstract
An embodiment provides a method for deriving an amount of PFAS substances from a total organic fluoride measurement in a sample, including: removing inorganic fluoride from the sample using one or more of an ion exchange cartridge and an exclusion apparatus; preconcentrating, using a solid phase extraction, at least one PFAS substance in the sample; digesting, using a working electrode and a counter electrode, the at least one PFAS substance to an amount of total organic fluoride; and determining, using an analyzer, the amount of total organic fluoride in the sample. Other aspects are described and claimed.
Claims18
A method for deriving an amount of polyfluoroalkyl substances and perfluoroalkyl substances (PFAS) from a total organic fluoride measurement in a sample, the method comprising:
- preconcentrating, using solid phase extraction, an amount of at least one PFAS substance in the sample;
- digesting, using a boron-doped diamond (BDD) working electrode and a counter electrode, the preconcentrated amount of the PFAS substance to an amount of total organic fluoride;
- and
- determining, using an analyzer, the amount of total organic fluoride in the sample.
Dependencies are inferred from the claim text.