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Citation
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HERO ID
5084714
Reference Type
Journal Article
Title
Aggregated-fluorescent detection of PFAS with a simple chip
Author(s)
Fang, C; Wu, J; Sobhani, Z; Al Amin, Md; Tang, Y
Year
2019
Is Peer Reviewed?
1
Journal
Analytical Methods
ISSN:
1759-9660
EISSN:
1759-9679
Volume
11
Issue
2
Page Numbers
163-170
DOI
10.1039/c8ay02382d
Web of Science Id
WOS:000454957600003
Abstract
In this study, aggregation-induced emission luminogens (AIEgen) are used for the detection of per- and poly-fluoroalkyl substances (PFAS) including perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS) and 1H,1H,2H,2H-perfluorooctanesulfonic acid (6:2FTS). A solution of acetone-water (solvent) containing AIE-PFAS is first formulated. From this solution, one droplet (1-2 L) is dropped and trapped into a hole in a chip made of glass slide. When the droplet is exposed to air, both water and acetone can vaporise, but acetone vaporises much more quickly than water does due to its higher vapour pressure. Consequently, with the solvent volume shrinking, the concentrations of AIE and PFAS increase in the shrinking droplet while the water percentage increases. At a certain stage of this process, the micelle of PFAS surfactant forms, accompanied by AIE aggregation. After completely vaporising and drying on the bottom of the chip-hole, the aggregated AIE features fluorescence, the density of which can be effectively linked to the concentration of PFAS surfactant. Thus, a simple sensor is developed for PFAS detection in the range of 0.1-100 M (41 ppb to 41 ppm for PFOA) within around 1 min using a 1-2 L PFAS sample.
Tags
PFAS
•
Expanded PFAS SEM (formerly PFAS 430)
Litsearch: September 2019
Web of Science
Not prioritized for screening
6:2 Fluorotelomer sulfonic acid
Perfluorooctane
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search Update (2013-2019)
WOS
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