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Related Experiment Video

Updated: May 22, 2025

Identifying Per- and Polyfluorinated Chemical Species with a Combined Targeted and Non-Targeted-Screening High-Resolution Mass Spectrometry Workflow

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Current Approaches in the Classification of PFAS: An Overview.

Lorenzo Secundo¹, Pierangelo Metrangolo¹, Valentina Dichiarante¹

¹Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab), Department of Chemistry, Materials and Chemical Engineering 'Giulio Natta', Politecnico di Milano, via L. Mancinelli 7, 20131, Milan, Italy.

Chemistry, an Asian Journal

|March 12, 2025

Summary

Defining perfluoroalkyl substances (PFAS) is crucial for addressing environmental persistence and health risks. This article reviews current approaches to classifying these diverse synthetic chemicals, highlighting the need for a unified global definition.

Keywords:

PFAS fluorine fluoropolymers perfluoroalkyl substances terminology

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Area of Science:

Environmental Chemistry
Toxicology
Regulatory Science

Background:

Perfluoroalkyl substances (PFAS) are synthetic chemicals with growing concerns regarding environmental persistence and potential health risks.
A universally accepted definition of PFAS is currently lacking, hindering international regulatory efforts and risk assessment.

Purpose of the Study:

To provide an overview of existing and proposed methods for identifying and grouping PFAS.
To emphasize the need for a multifaceted classification system for regulatory and scientific consensus.

Main Methods:

Review of different approaches to PFAS identification and grouping.
Analysis of classification criteria including structural motifs, functional uses, degradation, physicochemical properties, and toxicity.

Main Results:

Multiple approaches exist for defining PFAS, varying in their focus on chemical structure or a combination of properties.
The complexity and diversity of PFAS necessitate a comprehensive and adaptable classification strategy.

Conclusions:

A multifaceted classification system is essential for effective regulatory action, risk assessment, and environmental monitoring of PFAS.
The International Union of Pure and Applied Chemistry (IUPAC) is actively involved in developing standardized terminology and classification for PFAS.