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This Little PIGE Performed a Quick Analysis for Total Fluorine

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Presentation on theme: "This Little PIGE Performed a Quick Analysis for Total Fluorine"— Presentation transcript:

1 This Little PIGE Performed a Quick Analysis for Total Fluorine
Graham Peaslee Department of Physics Flame Retardant Dilemma & Beyond February 9, 2018

2 Outline Motivation: PFAS & How to measure them?
PIGE as a rapid screening test for fluorine Examples: Consumer products Contaminated groundwater Future Directions…

3 PFAS: Per- & Polyfluorinated Alkyl Substances
PFOA PFOS

4 ENVIRONMENTAL PERSISTENCE
So what is the problem? ENVIRONMENTAL PERSISTENCE BIOACCUMULATES UBIQUITOUS PFOA Industrial release Surfactant release Flame retardant release

5 PFAS do not degrade; pass through waste-water treatment plant
So what is the problem? PFAS do not degrade; pass through waste-water treatment plant Oliaei F, et al., Environ Sci Pollut Res Int. 2013,  

6 6

7 Current Detection Techniques
LC-MS/MS Lengthy Analysis Misses volatiles Needs many standards Cation/Anion/Neutral GC/MS Misses non-volatiles Better word standards, hard to attain appropriate standards LC-MS/MS

8 Perfluorinated Compounds
PFOA Imagine the advantages of being able to spectroscopically detect fluorine… PFOS

9 Spectroscopy Excitation Source Detector Sample
e.g. UV-Vis, FTIR, NMR, XRF, g-ray….

10 Our Solution: Ion Beam Analysis
PIXE PIGE X-ray g-ray

11 PIGE Instrumentation – 3 MV Tandem Pelletron Accelerator
Focus on beam in vacuum. Brought to air

12 PIGE Analysis of Fluorine

13 PIGE Analysis of Fluorine

14 Comparison with LC-MS/MS

15 Published online 1 February 2017
Open Access >10,000 downloads to date

16 The Future… Using PIGE to measure total Fluorine… Rapid (inexpensive),
Good surrogate for PFAS… Consumer products – already in hand – natural advantage Aqueous samples – Ground water – Drinking water (method developed)  need portability

17 Acknowledgements Meghanne Tighe, John Wilkinson, Sean McGuinness, Walter McLellan, Patrick McGuire, Hannah Olds, Judah VanZandt, Connor Bagwell, Christian Femrite (Notre Dame) Paul DeYoung, Dave Daugherty, Lisa Savagian, Eric Greve, Heather O’Connell, Yujin Liao, Margaret Dickinson, Adam Maley, David Lunderberg, Cody Berkobien, Megan Czmer, Brieana Linton, Shannon Urbanik, Margaret Dickinson, Brandon Miller, Kai Libby, (Hope College) Jennifer Field, Krista Barzen-Hanson, Alix Roebel, (Oregon State) Arlene Blum (Green Science Policy Institute), Jeff Gearhart, Gillian Miller (Michigan Ecology Center), Heather Stapleton (Duke U), Lauren Schaider (Silent Spring Institute), Suzanne Lapi (U. Alabama).

18 The End

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