Index Catalog // ScholarsArchive@OSU

Large volume (1,800 µL) injection HPLC/MS/MS for the quantitative determination of illicit drugs and human urinary biomarkers in municipal wastewater

Creator:: Chiaia Hernandez, Aurea C.
Abstract:: A sensitive, selective, rapid analytical method based on large-volume injection (LVI) liquid chromatography/ tandem mass spectrometry was developed using commercially-available hardware that eliminates the need for either off-line or on-line solid phase extraction. Centrifugation followed by the direct injection of 1,800 µL was used for the quantification of illicit drugs,...
Resource Type:: Masters Thesis
Full Text:: . Field A sensitive, selective, rapid analytical method based on large-volume injection (LVI

Measuring in situ biotransformation in BTEX-contaminated groundwater

Creator:: Alumbaugh, Robert E.
Abstract:: Benzylsuccinate (BSA), methylbenzylsuccinate (methylBSA), and ethylbenzylsuccinate (ethylBSA) are unambiguous anaerobic biotransformation products from toluene, xylenes, and ethylbenzene decay, respectively, and may be used to indicate intrinsic bioremediation is occurring at hydrocarbon-contaminated sites. In order to improve upon current methods that detect and quantify anaerobic hydrocarbon metabolites in field samples, solid-phase-extraction...
Resource Type:: Masters Thesis
Full Text:: methods that detect and quantify anaerobic hydrocarbon metabolites in field samples, solid-phase

In situ transformation of toluene and xylene to benzylsuccinic acid analogs in contaminated groundwater

Creator:: Reusser, Dominik E.
Abstract:: The rate of removal of benzene, toluene, ethylbenzene and the xylene isomers (BTEX) from contaminated groundwater is needed to design remediation processes. Benzylsuccinic acid (BSA) and methyl-benzylsuccinic acid (methyl BSA) are unambiguous metabolites of anaerobic BTEX biodegradation. An analytical method for quantitative determination of BSA in groundwater samples was developed....
Resource Type:: Masters Thesis
Full Text:: : Jennifer A Field The rate of removal of benzene, toluene, ethylbenzene and the xylene isomers (BTEX) from

Suspect Screening of Hydrocarbon surfactants in AFFFs and AFFF-Contaminated Groundwater by High Resolution Mass Spectrometry

Creator:: Garcia, Raymmah A.
Abstract:: Aqueous film forming foams (AFFFs) are proprietary mixtures containing hydrocarbon surfactants and per-and polyfluoroalkyl substances (PFASs) that are used to extinguish hydrocarbon-based fuel fires. There is limited information on hydrocarbon surfactants in AFFFs and AFFF-contaminated groundwater even though they are more abundant (5-10% w/w) than PFASs (0.9-1.5% w /w) in...
Resource Type:: Masters Thesis
Full Text:: Airports. 1999. 2. Houtz, E. F.; Higgins, C. P.; Field, J. A.; Sedlak, D. L., Persistence of

Determination of ethyl glucuronide and ethyl sulfate as human biomarkers of alcohol exposure in urine by liquid chromatography/electrospray tandem mass spectrometry with large volume injection

Creator:: Hu, Yan
Abstract:: This research was undertaken to develop a sensitive, selective, and rapid analytical method to measure ethyl glucuronide (EtG) and ethyl sulfate (EtS) in urine as urinary biomarkers of alcohol exposure. Large-volume injection (LVI) coupled with liquid chromatography / electrospray tandem mass spectrometry was used to eliminate the need for either...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Jennifer A. Field Staci L. Simonich This research was undertaken to develop a

Characterization and Biodegradation of Commercial Reference Material Capstone 1157

Creator:: Van Meter, Mariann I.
Abstract:: Capstone 1157 is a commercial reference material used in aqueous film forming foam (AFFF) applications and was manufactured by DuPont. The material’s purpose in this project was to be the sole carbon source to microbes in a biodegradation study in a microcosm environment. The goal of this project was to...
Resource Type:: Capstone Project
Full Text:: been used for standard analysis of PFAS prior to this, with the common mass defect range for PFAS

Fluorinated and deuterated surrogates for quantifying microbial transformation of chlorinated ethenes and ethanes in anaerobic groundwater

Creator:: Ennis, Elliot G.
Abstract:: Chlorinated aliphatic hydrocarbons (CAHs) such as vinyl chloride (VC) and 1,-2 dichioroethane (DCA), are wide-spread groundwater pollutants found at many contaminated field sites around the world. Quantitative tools are needed to determine the in situ rates of VC and DCA transformation to ethene in contaminated groundwater. The objective of this...
Resource Type:: Masters Thesis
Full Text:: Ethanes in Anaerobic Groundwater. Abstract approved: I- Jennifer A. Field Chlorinated aliphatic

Semi-volatile fluorinated organic compounds in Asian and Pacific Northwestern U.S. air masses

Creator:: Piekarz, Arkadiusz M.
Abstract:: Current studies suggest that perfluorinated organic compounds, such as fluorotelomer alcohols (FtOHs) in the troposphere, may be precursors of perfluorocarboxylic acids and perfluorosulfonates in remote regions. Fluorinated organic compounds were investigated in archived extracts collected from remote locations in Okinawa, Japan (HSO) and Mount Bachelor, Oregon (MBO) during the springs...
Resource Type:: Masters Thesis
Full Text:: , Jennifer A. Field, and Douglas F. Barofsky. 7 and TABLE OF CONTENTS Pa

Evidence for a stepwise mechanism in the cycloreversion of rhenium diolates

Creator:: Ness, Stephanie L.
Resource Type:: Masters Thesis
Full Text:: Chemistry presented on September 16, 1999. Title: Evidence for a Stepwise Mechanism in the Cycloreversion

Electronegativity of -SF₅, -CF₃SO₂, and -SO₂F mmeasured with X-ray photoelectron spectroscopy

Creator:: True, Jan E.
Abstract:: The electronegativities of -SF₅, -CF₃SO₂, and -SO₂F have been measured with gas phase X-ray photoelectron spectroscopy. Of these three groups previously measured values were found only for -SF₅. The electronegativities of -Cl, -Br, -CF₃, and -CF₃, were concurrently measured to determine how the findings of this research compare with other...
Resource Type:: Masters Thesis
Full Text:: of Science in Chemistry presented on April 6, 1999. Title: Electronegativity of -SF's CF1SO2 and

ScholarsArchive@OSU

Large volume (1,800 µL) injection HPLC/MS/MS for the quantitative determination of illicit drugs and human urinary biomarkers in municipal wastewater

Measuring in situ biotransformation in BTEX-contaminated groundwater

In situ transformation of toluene and xylene to benzylsuccinic acid analogs in contaminated groundwater

Suspect Screening of Hydrocarbon surfactants in AFFFs and AFFF-Contaminated Groundwater by High Resolution Mass Spectrometry

Determination of ethyl glucuronide and ethyl sulfate as human biomarkers of alcohol exposure in urine by liquid chromatography/electrospray tandem mass spectrometry with large volume injection

Characterization and Biodegradation of Commercial Reference Material Capstone 1157

Fluorinated and deuterated surrogates for quantifying microbial transformation of chlorinated ethenes and ethanes in anaerobic groundwater

Semi-volatile fluorinated organic compounds in Asian and Pacific Northwestern U.S. air masses

Evidence for a stepwise mechanism in the cycloreversion of rhenium diolates

Electronegativity of -SF₅, -CF₃SO₂, and -SO₂F mmeasured with X-ray photoelectron spectroscopy

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