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.
Claims20
A method for deriving an amount of PFAS substances from a total organic fluoride measurement in a sample, comprising:
- 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.
A method for deriving an amount of perfluoroalkyl substances from a total organic fluoride measurement in a sample, comprising:
- 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 perfluoroalkyl substance (PFAS) in the sample;
- digesting, using a working electrode and a counter electrode, the at least one perfluoroalkyl substance to an amount of total organic fluoride;
- and
- determining, using an analyzer, the amount of total organic fluoride in the sample.
A device for deriving an amount of PFAS substances from a total organic fluoride measurement in a sample, comprising:
- a digestion chamber;
- an exclusion apparatus;
- an ion exchange cartridge;
- an analyzer;
- and
- the device for deriving a PFAS substances from a total organic fluoride measurement in a sample being configured to:
- remove inorganic fluoride from the sample using one or more of the ion exchange cartridge and the exclusion apparatus;
- preconcentrate, using a solid phase extraction, at least one PFAS substance (PFAS) in the sample;
- digest, in a digestion chamber, using a working electrode and a counter electrode, the at least one PFAS substance to an amount of total organic fluoride;
- and
- determine, using an analyzer, the amount of total organic fluoride in the sample.
Dependencies are inferred from the claim text.