Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 520 for “"Chromatography-mass spectrometry"”.
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Supercritical fluid chromatography - mass spectrometry
High performance liquid chromatography (HPLC) is the most widely used<br/>separation technique within the pharmaceutical industry. Due to the growing need for<br/>high speed and high quality separations other techniques, such as supercritical fluid<br/>chromatography (SFC), are now being …
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Investigation of resveratrol metabolism using liquid chromatography-mass spectrometry.
… of resveratrol metabolism using liquid chromatography-mass spectrometry.
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Liquid chromatography-mass spectrometry, an evolution in doping analysis
… of LC-MS in the field of doping analysis, mass spectrometrical information was acquired with capillary GC-MS. This analytical technique is only suitable for volatile compounds. Because doping agents include polar functional groups in their structure, their volatility is limited and prior to …
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Gas Chromatography: Mass Spectrometry of Chemical Agents and Related Interferents
… been involved in developing a field-portable gas chromatography-mass spectrometry (GC-MS) system with solid phase microextraction (SPME) sampling for point detection of chemical agents. The objective is to minimize the analysis time between sampling and detection of a potential chemical threat. …
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Liquid chromatography-mass spectrometry-based neuropeptide characterizations across neuronal models
… depends on the available of suitable tools. Mass spectrometry (MS), coupled to liquid chromatography (LC) and assisted by appropriate sampling protocols, has been successfully applied to unambiguously characterize neuropeptides and their post-translational modifications. No individual MS …
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Liquid Chromatography – Mass Spectrometry for Protein Biomarker Discovery in Pancreatic Adenocarcinoma
… its early stages. Recent developments in liquid chromatography – mass spectrometry (LC-MS) technology have made it possible to profile proteins associated with disease in a comprehensive manner. Within this thesis current LC-MS methodology was applied to the problem of pancreatic cancer. A …
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Gas chromatography/mass spectrometry response pattern analysis of volatile organics in soils
The purge-and-trap gas chromatographic/mass spectrometric methods used by government agencies and their contracting laboratories for the analysis of volatile organic compounds in soils require the addition of both surrogate and internal standards to the sample matrix just prior to purging the …
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The Development and Evaluation of Methods for the Screening of Steroids using Molecular Imprinted Polymers coupled with comprehensive Gas Chromatography/Mass Spectrometry and Aptamers coupled with Liquid Chromatography/Mass Spectrometry
… accredited laboratories. Whilst liquid chromatography (LC) systems provide a highly sensitive detection method for targeted species, gas chromatography, especially when coupled to mass spectrometry, is considered preferable for the screening of a wider range of target and unknown …
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Determination of pesticides and chloroanisoles in water samples using gas chromatography-mass spectrometry.
… chloroanisoles available.Traditionally, such chromatography would have been preceded by solvent extraction of residues, followed by concentration of the resulting organic extract. These methods were compared with the use of the more recently developed Solid Phase Extraction (SPE) cartridges. …
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Analysis of accelerants by gas chromatography-mass spectrometry and cyclic voltammetry for biosensor development
… standards were also analysed using Gas Chromatography - Mass Spectrometry and confirmed using current fire debris sample analysis standards.
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Development of gas chromatography/mass spectrometry analysis of urinary acylcarnitines : application to metabolism studies
… which makes them unsuitable for direct gas chromatography (GC) and combined gas chromatography/mass spectrometry (GCIMS). The latter of these is the favoured technique for normal urinary organic acid assays and is ideal in terms of selectivity and sensitivity. The work reported here details …
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Quantification of short-chain fatty acids in cecal material by gas chromatography-mass spectrometry
… derivatized for quantitative measurement by gas chromatography-mass spectrometry. Antibiotic-treated animals gavaged with <em>Candidaalbicans</em> had a lower level of cecal butyrate relative to untreated animals, but a higher level of butyrate when treated mice were also administered …
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Proteomics and peptidomics for investigating metabolic and neurological disorders via liquid chromatography-mass spectrometry
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Development of Liquid Chromatography Mass Spectrometry technique for evaluation and differentiation of plant derived isomers
… the desired therapeutic effect. Herein, liquid chromatography quadrupole time-of-flight mass spectrometry (LC-qTOF-MS) method capable of distinguishing between these isomers was developed.
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Analytical Approaches for Analyzing Microplastics Using Pyrolysis Gas Chromatography Mass Spectrometry and Accelerated Solvent Extraction
… act as major sinks for microplastics, yet robust mass-based quantification of polymer composition in these complex matrices remains analytically challenging. This study applies an integrated accelerated solvent extraction (ASE) and pyrolysis–gas chromatography–mass spectrometry (Py-GCMS) workflow …
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Characterization of Microorganisms of Interest to Homeland Security and Public Health Utilizing Liquid Chromatography/Mass Spectrometry
Liquid chromatography/quadrupole time of flight mass spectrometry (LC/QTOF MS) utilizing electrospray ionization was employed to monitor protein expression in Escherichia coli and Shigella organisms. Automated charge state deconvolution, spectral subtraction and spectral mirroring were used to …
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Development of liquid chromatography mass spectrometry methods for the monitoring of ropivacaine, endogenous steroids and dihydroartemisinin
… plasma using equilibrium dialysis and HILIC chromatography coupled with a high resolution mass spectrometery. In this chapter a highly sensitive method for the determination of the free and bound portion of ropivacaine in patients undergoing knee and hip joint surgery was developed. Patient …
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