公开(公告)号：US20250067711A1

公开(公告)日：2025-02-27

申请号：US18941328

申请日：2024-11-08

Applicant: HACH COMPANY

Inventor： Vishnu Vardhanan RAJASEKHARAN ,  Cary Burton JACKSON ,  Matthew Ryan SALZER ,  Dan Jonathan KROLL

IPC: G01N31/00 ,  G01N1/40 ,  G01N33/18

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.