FluoroMatch IM: An Interactive Software for PFAS Analysis by Ion Mobility Spectrometry

FluoroMatch IM: An Interactive Software for PFAS Analysis by Ion Mobility Spectrometry

Per- and polyfluoroalkyl substances (PFASs) are often present in complex mixtures at trace levels in environmental samples, posing difficulties for analytical chemists. Ion mobility offers highly replicable identifiers, enabling the use of community-based libraries for PFAS annotation in nontargeted...

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Bibliographic Details
Main Author: Rachel Smolinski (19500923) (author)
Other Authors: Jeremy P. Koelmel (4635448) (author), Paul Stelben (20458893) (author), David Weil (20935403) (author), David Godri (17621259) (author), David Schiessel (17621269) (author), Michael Kummer (17048665) (author), Sarah M. Stow (1317921) (author), Sheher Mohsin (20935406) (author), Lauren Royer (19231585) (author), Alan McKenzie-Coe (20935409) (author), Thomas Lubinsky (20935412) (author), Daniel DeBord (10326810) (author), Olivier Chevallier (5200709) (author), Emma E. Rennie (2324062) (author), Krystal J. Godri Pollitt (3877819) (author), Carrie McDonough (17786151) (author)
Published: 2025
Subjects:
Biochemistry
Cell Biology
Inorganic Chemistry
Space Science
Biological Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
standard mix showed
resolution mass spectrometry
mass defect filtering
homologous series detection
false positive rate
limited software exists
194 pfas ions
accurate mass matching
real wastewater samples
wastewater samples
interactive software
pfas annotation
pfas analysis
environmental samples
trace levels
targeted approach
targeted annotations
study demonstrates
source tool
rapid annotation
prepared mixture
posing difficulties
polyfluoroalkyl substances
often present
nontargeted analysis
neutral open
n </
free vendor
formula prediction
features included
continuously expanded
complex mixtures
based libraries
analytical chemists
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Description
Summary:Per- and polyfluoroalkyl substances (PFASs) are often present in complex mixtures at trace levels in environmental samples, posing difficulties for analytical chemists. Ion mobility offers highly replicable identifiers, enabling the use of community-based libraries for PFAS annotation in nontargeted analysis. Currently, limited software exists to leverage the capabilities of liquid chromatography ion mobility high-resolution mass spectrometry (LC-IM-HRMS) for nontargeted analysis. FluoroMatch IM is a free vendor-neutral open-source tool for rapid annotation of PFASs in LC-IM-HRMS datasets. Annotation algorithms include collision cross-section (CCS) matching, formula prediction, homologous series detection, mass defect filtering, and accurate mass matching with a database of 194 PFAS ions that can be continuously expanded by the community. Results from FluoroMatch IM were compared to a targeted approach with a laboratory-prepared mixture of 63 PFASs and real wastewater samples. A nontarget workflow incorporating FluoroMatch IM revealed additional likely PFASs (<i>n</i> = 16) while confirming most targeted annotations (11/12) in wastewater samples. Validation of the standard mix showed a low false negative rate of 5% and a 5% false positive rate for features included in the CCS library, with a 0% false positive rate for features assigned confident scores. This study demonstrates the promise of FluoroMatch IM for streamlining PFAS analysis workflows.

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