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dc.rights.licenseRestricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.
dc.contributorShelley, Jacob T., 1984-
dc.contributorLakshmi, K. V.
dc.contributorMcGown, Linda Baine
dc.contributor.authorDouglass, Luke
dc.date.accessioned2021-11-03T09:21:04Z
dc.date.available2021-11-03T09:21:04Z
dc.date.created2021-01-21T12:36:43Z
dc.date.issued2020-08
dc.identifier.urihttps://hdl.handle.net/20.500.13015/2588
dc.descriptionAugust 2020
dc.descriptionSchool of Science
dc.description.abstractElectrical discharges are often used as ionization sources for Ambient Desorption/Ionization – Mass Spectrometry (ADI/MS). One such ADI/MS source, the Flowing Atmospheric-Pressure Afterglow (FAPA), has been characterized with a variety of techniques. Excited radical and neutral species produced by the FAPA have been measured using Optical Emission Spectroscopy (OES); however, the afterglow region of the FAPA is difficult to characterize due to how few photons it emits. In order to overcome the limitations of OES, Electron Paramagnetic Resonance (EPR) and a variety of spin-trapping reagents were used to analyze radical and reactive species in the FAPA afterglow. Solutions containing spin-trapping reagents were treated with FAPA over a range of gas flow rates, discharge currents, FAPA-to-sample distances, and plasma treatment times. Several species were detected: O, 1O2, ●OH, H●, a CO2●-. Furthermore, different configurations of FAPA were compared to see which produced a greater abundance of radicals. Ultimately, EPR and spin-trapping reagents were found to be an effective method for the characterization of the afterglow region of FAPA.
dc.language.isoENG
dc.publisherRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofRensselaer Theses and Dissertations Online Collection
dc.subjectChemistry
dc.titleEPR analysis of radicals produced by a flowing atmospheric-pressure afterglow
dc.typeElectronic thesis
dc.typeThesis
dc.digitool.pid180258
dc.digitool.pid180259
dc.digitool.pid180260
dc.rights.holderThis electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
dc.description.degreeMS
dc.relation.departmentDept. of Chemistry and Chemical Biology


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