Bulletin of the American Physical Society
63rd Annual Meeting of the APS Division of Plasma Physics
Volume 66, Number 13
Monday–Friday, November 8–12, 2021; Pittsburgh, PA
Session JP11: Poster Session IV:
Astrophysical Plasma Phenomena
Education and Outreach: Public Engagement, Workforce Development, DEI, High School Research, Undergraduate Research
MFE - Exhaust and PMI; Disruptions and Runaway Electrons; Energetic Particles
2:00 PM - 5:00 PM
Tuesday, November 9, 2021
Room: Hall A
Abstract: JP11.00181 : Detection of Hydrated Electrons at Liquid-Plasma Interface Using Total Internal Reflection Absorption Spectroscopy*
Shalese M Lovell
Shalese M Lovell
Adam D Light
Polyfluoroalkyl substances (PFAS) are highly stable compounds used in a multitude of commercial applications. Increasing amounts of evidence point to ubiquitous contamination in nature and negative health effects of PFAS bioaccumulation. Removal of PFAS contamination remains difficult due to the strength of the carbon-fluorine bonds. The most promising avenues involve advanced reduction or oxidation pathways, particularly lone electrons dissolved in water (hydrated electrons). Low-temperature plasma is capable of producing hydrated electrons at low power densities, making it a strong candidate for PFAS remediation. Hydrated electrons absorb strongly in the red, so that even very small absorbance can be detected using a helium-neon laser and lock-in detection. This study uses an established total internal reflection absorption spectroscopy (TIRAS) technique to explore whether atmospheric pressure plasma jets can effectively produce hydrated electrons at the liquid surface.
*This work is supported by a Faculty Student Collaborative Grant and Natural Science Division Research and Development funds from Colorado College.
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