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Citation
Tags
HERO ID
3981874
Reference Type
Journal Article
Title
Electrochemical Detection of Thioether-Based Fluorosurfactants in Aqueous Film-Forming Foam (AFFF)
Author(s)
Fanga, C; Megharaj, M; Naidu, R
Year
2017
Is Peer Reviewed?
Yes
Journal
Electroanalysis
ISSN:
1040-0397
EISSN:
1521-4109
Volume
29
Issue
4
Page Numbers
1095-1102
DOI
10.1002/elan.201600724
Web of Science Id
WOS:000398850400023
Abstract
Using cyclic voltammetry (CV) and impedance (IMP), we report a simple approach to detect new fluorosurfactant ingredient formulated in aqueous film-forming foam (AFFF), specifically the thioether-based one. First, we employ ion chromatography (IC) to identify all possible elements with the help of chemical oxidation and infrared spectrum (IR) to identify all possible functional groups. We thus propose a possible thioether-based molecular structure of fluorosurfactant formulated in AFFF. By studying the self-assembled monolayer (SAM) formed on gold (Au) surface via thio-Au bond, we establish a relationship between the SAM density and the amount of the thioether-based fluorosurfactant for the AFFF detection. Solid phase extraction (SPE) and nanoporous Au electrode are employed to enhance the sensitivity. Consequently, a detection limit of 10 ppb (v/v) has been achieved for AFFF-spiked tap water sample.
Keywords
Electrochemical detection; thioether; fluorosurfactants; AFFF; nanoporous gold
Tags
PFAS
•
Expanded PFAS SEM (formerly PFAS 430)
Perfluorooctane
•
^Per- and Polyfluoroalkyl Substances (PFAS)
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
•
PFHxS
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
Screening Results
Excluded/Not on Topic
Literature Search Update (2013-2019)
WOS
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