1. Scope

Keywords

Rationale

There is a need in the environmental profession for guidance on how to use new analytical approaches for PFAS identification. Several advanced methods have been developed to identify PFAS that are not well understood and not detected by existing USEPA and ASTM methods. These methods can help with differentiation between point and ambient sources of PFAS. They can also help with identification of PFAS source materials. Use of these advanced analytical methods can also benefit in the development of a conceptual side model due to the different characteristics of these nontarget analytes. While there are no regulatory requirements to identify these compounds at present, their identification can be useful in allocation of responsibility and evaluation of current and future risk. This guidance can also aid the environmental professional in the selection of the appropriate analytical method and interpretation of the results, depending on their needs.