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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/802346

Title
Chemical process analysis: chemometrics; instrument control; applications in equilibrium and kinetic investigations
Author/Creator
Norman, Sarah Elizabeth
Institution
University of Newcastle. Faculty of Science and Information Technology, School of Environmental and Life Sciences
Description
Research Doctorate - Doctor of Philosophy (PhD)
Description
This work presents the development and application of modern data acquisition and analysis techniques for the investigations of equilibrium and kinetic reactions. The analytical technique is known as second order global analysis and a background of this relatively novel approach has been given. The theory behind and characteristics of the computer programs developed analysis as part of this research are described in Chapter Two along with descriptions of the instrumentation and programs developed for the acquisition of both potentiometric and spectrophotometric data. Applications of the developed programs include a potentiometric and spectrophotometric study of the protonation and stability equilibria of a series of polydentate N-donor ligands, as detailed in Chapter Three. The combination of potentiometric and spectrophotometric analysis has been shown to be a powerful analytical tool. Spectrophotometric titrations were also combined with fast stop-flow experiments in order to elucidate the complex reaction mechanisms associated with helicating ligands. The helication of the ligand ‘PepdaH₂’ with copper(II) and nickel(II) is examined in Chapter Four, along with discussions concerning the ability to induce chirality in the helicates from the addition of a chiral counter ion. Investigations into chirality were further continued in Chapter Five where the stereoselectivity of a benzimidazole-based ligand was investigated with circular dichroism titrations. The synthesis and characterisation of the benzimidazole-based ligands are provided, including a study of the ability of the ligands to form higher order complexes as investigated using electrospray mass spectroscopy. Chapter Six provides an in-depth discussion concerning the use of combined glass hydrogen selective electrodes for the determination of equilibrium constants, as this was a major focus of this research. Different calibration techniques are discussed and a description of the internal calibration technique developed is provided along with examples of the advantages of performing internal calibration of the electrode.
Relation
University of Newcastle Research Higher Degree Thesis
Date
2008
Keyword(s)
chemometrics;  data analysis;  coordination chemistry;  helicates;  equilibrium;  kinetics;  non-linear least square analysis;  potentiometric titrations;  spectrophotometric titrations;  electrode calibration
Resource Type
thesis
Rights
Copyright 2008 Sarah Elizabeth Norman
Identifier
http://hdl.handle.net/1959.13/802346
Language
eng
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"Chemical process analysis: chemometrics; instrument control; applications in equilibrium and kinetic investigations"
 
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