Megson, David, Niepsch, Daniel, Spencer, Jonathan, dos Santos, Claudio, Florance, Hannah, MacLeod, Cecilia ORCID: 0000-0002-4223-111X and Ross, Ian (2024) Non-targeted analysis reveals hundreds of per- and polyfluoroalkyl substances (PFAS) in UK freshwater in the vicinity of a fluorochemical plant. Chemosphere, 367:143645. ISSN 0045-6535 (Print), 1879-1298 (Online) (doi:https://doi.org/10.1016/j.chemosphere.2024.143645)

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Abstract

There are now over 7 million recognised per- and polyfluoroalkyl substances (PFAS), however the majority of routine monitoring programmes and policy decisions are based on just a handful of these. There is need for a shift towards gaining a better understanding of the total PFAS present in a sample rather than relying on targeted analysis alone. Total PFAS methods help us to understand if targeted methods are missing a mass of PFAS, but they do not identify which PFAS are missing. Non- targeted methods fill this knowledge gap by using high resolution mass spectrometry to identify the PFAS present in a sample. In this manuscript we use complimentary targeted and non-targeted analysis (NTA) to detect hundreds of PFAS in five freshwater samples obtained from the Northwest of the UK. Targeted analysis revealed PFOA at a maximum concentration of 12,100 ng L-1 , over three orders of magnitude greater than the proposed environmental quality standard (EQS) of 100 ng L-1. A conservative assessment calculated an averag

Item Type:	Article
Uncontrolled Keywords:	per- and polyfluoroalkyl substance (PFAS), non-targeted screening (NTS), water, high resolution mass spectrometry
Subjects:	Q Science > Q Science (General) T Technology > T Technology (General) T Technology > TP Chemical technology
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > School of Engineering (ENG)
Last Modified:	06 Nov 2024 13:14
URI:	http://gala.gre.ac.uk/id/eprint/48457

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