Al Amin, Md. and Sobhani, Zahra and Chadalavada, Sreenivasulu 
ORCID: https://orcid.org/0000-0002-5000-8313 and Naidu, Ravi and Fang, Cheng
(2020)
Smartphone-based / Fluoro-SPE for selective detection of PFAS at ppb level.
Environmental Technology and Innovation, 18:100778.
pp. 1-8.
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Abstract
Fluoro-solid phase extraction (fluoro-SPE) has been well established to selectively extract targets after they have been fluoro-tagged. Here we report that this technique can also be used to selectively extract fluorosurfactants of PFAS (per- and poly-fluoroakyl substances), which have fluoro-carbon skeletons, from other anionic surfactants that have no fluoro-carbon skeletons. We advance the fluoro-SPE protocol to enable the extraction of fluorosurfactants using 4-5 times (in volume) more solvent for fluorophilic eluting in effort to overcome the strong interaction between the fluorosurfactants and the fluoro-Gel. Based on a smartphone-based app we developed recently to assess the colouration of fluorosurfactants with a dye (ethyl violet) that is similar to MBAS (methylene blue active substances), plus an SPE for pre-concentration and fluoro-SPE for pre-selection, we successfully achieve a detection limit of 1 ppb for the PFAS including perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS) and 6:2 fluorotelomer sulfonate (6:2FTS), which is encouraging and can be conducted in a general laboratory.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Faculty/School / Institute/Centre: | No Faculty |
| Faculty/School / Institute/Centre: | No Faculty |
| Date Deposited: | 06 Mar 2022 22:58 |
| Last Modified: | 04 Apr 2022 07:47 |
| Uncontrolled Keywords: | App based reading; F-SPE; PFAS; Smartphone |
| Fields of Research (2020): | 40 ENGINEERING > 4011 Environmental engineering > 401199 Environmental engineering not elsewhere classified |
| Identification Number or DOI: | https://doi.org/10.1016/j.eti.2020.100778 |
| URI: | http://eprints.usq.edu.au/id/eprint/47323 |
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