Browsing Masters Degrees (Chemistry) by Title
Now showing items 23-42 of 243
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Capillary electrophoresis and related techniques for the analysis of fresh water algal toxins.
(1997)As cyanobacteria (also known as blue green algae) produce a range of cyclic peptides which are highly toxic, capillary electrophoresis and associated techniques have been investigated to assess their applicability ... -
The catalysed activation of n-octane over iron modified hydroxyapatites.
(2014)This research effort investigated the activation of n-octane by oxidative dehydrogenation and dehydrogenation over iron substituted and iron supported on hydroxyapatite catalysts. Pure hydroxyapatite and iron substituted ... -
Characterisation and quantification of wood extractives and their impact on pitch.
(2011)The aims of this study were to characterise and quantify wood extractives in E. grandis and E. nitens and determine the impact of wood extractives on pitch formation. Initially a comparison was made with individual solvent ... -
Characterisation of SAPPI SAICCOR pulp mill's effluent.
(2001)SAPPI SAJCCOR, whose factory is situated south of Durban, South Africa, is one of the few paper and pulp mills that uses the acid sulphite process with calcium and magnesium bases to produce a high-grade cellulose pulp. ... -
A chemical and pharmacological investigation of three South African plants.
(2006)Three plant species (Phylica paniculata Willd., Pergularia daemia Forssk. and Monsonia -
The chemical constituents of Ehretia rigida, Apodytes dimidiata and Ocotea kenyensis.
(1998)Three species have been investigated in this project: Iso-ocobullenone (p 23) and its probable precursor (p 27) have been isolated from the leaves and bark of Ocotea kenyensis. This is only the second time that these ... -
A chemical investigation of a KwaZulu-Natal medicinal plant, Momordica foetida Schum. & Sond.
(1994)Momordica foetida Schum. & Sond. (Cucurbitaceae), locally known as iNtshungu, is widely used by the Zulu people of Natal-KwaZulu for the treatment of a variety of ailments. The dried leaves leaves and stems of this plant ... -
The chemical investigation of four medicinal plants.
(2000)This thesis describes a phytochemical investigation of four medicinal plants, namely, Agave attenuata (Agavaceae), Balanites maughamii (Balanitaceae), Astrotrichilia parvifolia (Meliaceae) and Combretum fragrans (Combretaceae). ... -
The chemical investigation of Ledebouria ovatifolia, Clivia caulescens and Haemanthus pauculifolius.
(1999)Ledebouria ovatifolia (Bak.) lessop, Clivia caulescens R.A.Dyer and Haemanthus pauculifolius Snijman & Van Wyk were the three species investigated in this work. Ledebouria ovatifolia belongs to the family Hyacinthaceae ... -
The chemical investigation of Ledebouria zebrina and Scilla natalensis.
(2001)Ledebouria zebrina and Scilla natalensis Planch were the two species investigated in this work. Ledebouria zebrina belongs to the Hyacinthaceae (Liliacea sensu lato) and to this date, the chemical composition of this ... -
Chemical monitoring and waste minimisation audit in the electroplating industry.
(2004)Theoretical waste minimisation opportunities and options for electroplating were sought from the literature. Their suitability under the specific site conditions of a chromium electroplating plant were evaluated using the ... -
The chemotherapeutic potential of bidentate pyrrolide-imine gold (III) chelates.
(2014)Abstract available in PDF file. -
The cis-effect of the n-donor moiety on the rate of chloride substitution in (N^N^N) and (N^C^N) platinum (II) complexes by nitrogen bio-relevant nucleophiles.
(2013)Abstract available in PDF file. -
A comparative study of mixed metal oxide catalysts for the oxidation of C4, C6 and C8 linear alkanes.
(2007)The Fischer-Tropsch process in South Africa, used for producing chemicals from synthesis gas, which is mostly derived from the gasification of coal, gives a large amount of medium chain length alkanes (C4-C8), which have ... -
A comparative study of molybdenum and iron phosphate-based catalysts in n-hexane activation.
(2009)A comparative study of the activation of n-hexane over the 12-molybdophopshoric acid (H3PMo12O40 or HPA), its Fe3+ doped salt (Fe0.69H0.93PMo12O40 or Fe doped HPA) and the iron phosphate catalyst (P/Fe = 1.22) was carried ... -
A comparative study of nickel molybdate and carbon nanotube supported nickel molybdate catalysts for the oxidative dehydrogenation of n-octane.
(2015-01-05)A comparative study of the activation of n-octane over nickel molybdate (α and β-phases), carbon nanotubes and carbon nanotube supported nickel molybdate was carried out in the gas phase in a plug flow fixed bed reactor ... -
A comparative study of solvent extraction, Soxhlet extraction, steam distillation, headspace analysis and headspace solid phase microextraction for the extraction of volatile terpenoid compounds in the curry leaf plant (Murraya koenigii).
(2010)A comparative study was undertaken of different extraction methods for the isolation of volatile organic compounds from Murraya koenigii (curry leaf plant). The techniques studied included the traditional methods of ... -
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, ...