Browsing Masters Degrees (Chemistry) by Title
Now showing items 44-63 of 255
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A comparative study of the effect of anthropogenic activity on the Palmiet and Sezela rivers, South Africa.
(2016)Abstract available in PDF file. -
A comparative study of VPO catalysts in the oxidation of butane to maleic anhydride.
(2002)Co promoted and unpromoted vanadium-phosphorous-oxide (VPO) catalysts were synthesized via an organic route. The catalyst precursor was calcined and then conditioned in a reactor, forming the active vanadyl pyrophosphate, ... -
Complexes formed by zinc and cyanide ions at elevated pH.
(1990)The experimental work described in this thesis is aimed primarily towards elucidation of the speciation of zinc-cyanide systems at elevated pH. In this study the formation and stability of H+-eN-, binary Zn2+-eN- and ternary ... -
Copper(I), Palladium(II) and Platinum(II) complexes of the 2- diphenylphosphino-1,10-phenanthroline ligand.
(1998)Chapter 1 reviews the coordination behaviour of the 6-diphenylphosphino-2,2'-bipyridine, 6-anilino-2,2'-bipyridine, 2,2'-bipyridyl-6-one, 6-N-methylanilino-2,2'-bipyridine, 6-piperidyl-2,2'-bipyridine and 2-(phenylamino) ... -
Corrosion of aluminium alloys used in automotive radiators.
(1999)The replacement of copperlbrass radiators in the automotive industry with radiators made from aluminium components provided the basis of this research. Since aluminium is more susceptible to corrosion than either copper ... -
Design, synthesis and biological screening of potential anticancer Smac peptidomimetics to target XIAP.
Abstract available from print copy only. -
The destabilising effects of various cations on a surfactant derivative of poly iso-butenyl succinic anhydride.
(1990)The interfacial behaviour of two amphiphillic poly iso-butenyl succinic anhydride (PIBSA)-derived surfactants and the effect of their interaction with various nitrate salts on the stability of a water-in-oil type emulsion ... -
A detailed kinetic and mechanistic investigation into the rate of chloride substitution from chloro terpyridine platinum (II) and analogous complexes by a series of azole nucleophiles.
(2010)The substitution kinetics of the complexes: [Pt(terpy)Cl]Cl?2H2O (PtL1), [Pt(tBu3terpy)Cl]ClO4 (PtL2), [Pt{4?-(2???-CH3-Ph)terpy}Cl]BF4 (PtL3), [Pt{4?-(2???-CF3-Ph)terpy}Cl]CF3SO4 (PtL4), [Pt{4?-(2???-CF3-Ph)-6-Ph-bipy}Cl] ... -
The determination of activity coefficients at infinite dilution using gas liquid chromatography.
(1991)The aim of this investigation was to develop and test a theory that allowed for the calculation of the activity coefficients at infinite dilutions (l' ~ 3) from G.L.C. measurements using moderately volatile solvents. The ... -
The determination of activity coefficients at infinite dilution using gas-liquid chromatography.
(1996)Abstract available in PDF file. -
Determination of inorganic and polynuclear aromatic hydrocarbon contents in South African sewage sludges.
(2005)A total of 34 sewage sludge samples were collected from South African provinces: KwaZulu- Natal, Gauteng, North West and Western Cape province. The samples were analysed for mineral ions and polynuclear aromatic hydrocarbons ... -
The determination of organochlorinated pesticides and polychlorinated biphenyls in sediment, soil and water of the Msunduzi River, KwaZulu-Natal, South Africa.
(2014)Persistent organic pollutants (POPs) are a major class of organic contaminants of serious global concern due to their persistence in the environment because of their stability to photolytic, chemical and biological ... -
Determination of polycyclic aromatic hydrocarbons in the water, soils and surface sediments of the Msunduzi River, KwaZulu-Natal, South Africa.
(2016)Polycyclic aromatic hydrocarbons (PAHs) are organic pollutants which are known carcinogens. Their presence in the environment has been linked to cancer, neurological and reproductive illnesses to name but a few. Hence it ... -
Determination of the inorganic pollutants in South African sewage sludges.
(2004)A total of 78 sludge samples originating from 69 sewage works of South Africa were used in this investigation. Seven of the sludge samples were liquid and the rest were solid. Moisture content, pH and mineral ion determination ... -
Dinuclear complexes of copper, silver and gold bridged by phosphoruspyridyl and phosphorusnaphthyridyl ligands.
(1995)Chapter 1 setves as an introduction to the synthesis and characterisation of copper(!), silver(!) and gold(!) complexes of the 2,6-bis( diphenylphosphino )pyridine { (Ph2P)2py}, phenylbis(2- pyridyl)phosphine {PhP(py)2 ... -
DNA cleavage, photoinduced by benzophenone-based sunscreens.
(2003)The topical application of sunscreens is widely practised to protect healthy and photosensitive skins from the sun. The benzophenone-derived sunscreens, e.g. 2-hydroxy-4-methoxy benzophenone-5-sulphonic acid (or benzophenone-4) ... -
Doping titanium dioxide with copper, nitrogen, or sulphur : physico-chemical properties and their photo-catalytic activity towards emerging pollutants.
(2015)Abstract available in PDF file.