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Now showing items 11-20 of 40
THE EVALUATION OF ENVIRONMENTAL CONTAMINANTS USING STATIC HEADSPACE GAS CHROMATOGRAPHY MASS SPECTROMETRY, VACUUM ULTRAVIOLET DETECTION
(2021-05-13)
In analytical chemistry the term “headspace” refers to the vapor that forms above a sample (liquid or solid) in a closed container. Headspace (HS) sampling is the method to promote partition between volatile components ...
NOVEL DETECTION METHODS AND GAS-FREE HYDROXIDE ELUENT GENERATOR FOR CAPILLARY LIQUID/ION CHROMATOGRAPHY
(2020-06-17)
The light absorbed by a molecule, except for an efficient fluorophore, is mostly converted into heat, thereby causing a change in temperature. In a liquid flow system, this change in temperature results in changes in the ...
Strategies for enhancing chromatographic efficiencies in chiral and achiral supercritical and liquid chromatography
(2020-09-01)
The fundamental aim of chromatography has been to achieve baseline separation between the components of a mixture in the shortest possible time. Recently there has been a shift in the chromatographic focus of enantiomeric ...
DEVELOPMENT OF HPLC STATIONARY PHASES WITH UNIQUE SELECTIVITIES AND INTRODUCTION OF MOLECULAR ROTATIONAL RESONANCE SPECTROSCOPY IN GAS CHROMATOGRAPHY
(2020-11-23)
This thesis contributes to advancing liquid and gas chromatography by introducing new stationary phases for HPLC and a new hyphenated GC technique. In the first section, new pH stable stationary phases based on geopolymers ...
ELECTROCHEMICAL AND PHOTOELECTROCHEMICAL PROPERTIES OF OXIDE AND CHALCOGENIDE SEMICONDUCTORS
(2020-12-08)
Photoelectrochemical (PEC) water splitting via inorganic semiconductors has shown interest in technical applications such as harvesting sunlight as sustainable fuels. Chalcogen-based (S, Se, Te) semiconductors are important ...
PREPARATION AND CHARACTERIZATION OF SILVER AND COPPER VANADATES
(2021-08-16)
Combining two or more binary compounds to generate a multinary compound is a viable strategy to improve the performance and properties of the parent binary compounds. In this vein, multinary compound semiconductors have ...
DETERMINATION OF THE KINETIC ROLES OF THE MEMBRANE IN THE CATALYSIS OF RASGEFS BY USING AN ENGINEERED MODEL PROTEIN
(2021-08-10)
Ras guanine nucleotide exchange factors (RasGEFs), which include Son of Sevenless (SOS), Ras Guanine Nucleotide Releasing Protein (RasGRP), and Ras Guanine Nucleotide Releasing Factor (RasGRF), catalyze nucleotide exchange ...
TARGETED AND UNTARGETED CHROMATOGRAPHY-MASS SPECTROMETRY METHODS FOR ALCOHOLIC BEVERAGE ANALYSIS
(2021-08-16)
There has been an increased interest in the “craft” alcohol industry in recent years. Contrary to larger corporations that focus on standardizing their recipes for mass production, these small, independent businesses can ...
SUPERCRITIAL FLUID EXTRACTION - SUPERCRITICAL FLUID CHROMATOGRAPHY - MASS SPECTROMETRY (SFE-SFC-MS) METHOD DEVELOPMENT FOR ONLINE EXTRACTION OF COMPLEX BIOLOGICAL AND ENVIRONMENTAL MATRICES
(2021-09-03)
A systematic approach to the rapid development of hyphenated online methods for supercritical fluid extraction-supercritical fluid chromatography-mass spectrometry (SFE-SFC-MS) was established for the analysis of complex ...
NEW FLEXIBLE MOLDABLE ION-EXCHANGE POLYMERS AND THEIR ANALYTICAL APPLICATIONS
(2021-08-03)
This dissertation aims to improve the functionality of open tubular capillary ion chromatography (OTIC) in terms of the lower limit of detection (LOD) and higher sensitivity by fabricating a microchannel suppressor and ...