Now showing items 21-30 of 117
The determination of organochlorinated pesticides and polychlorinated biphenyls in sediment, soil and water of the Msunduzi River, KwaZulu-Natal, South Africa.
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 ...
The oxidation of n-octane by iridium and cobalt PNP complexes.
Paraffin activation has practical implications in the replacement of current petrochemical feedstocks (olefins), by utilizing economical and easily accessible alkanes, which may result in more efficient strategies for ...
The structure and synthesis of metabolites from virgilia oroboides and chlorophora excelsa (Iroko)
In the present study the acetone extract of the heartwood of two trees, Virgilia oroboides and Chlorophora excelsa, were investigated. The heartwood of Virgilia oroboides afforded a variety of known flavonoids, as well as ...
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).
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 ...
Physical and chemical properties of carbon nanotubes and silica nano-composites on the photo-catalytic activity of titania nanoparticles for selected organic pollutants.
High surface area materials were synthesized in order to support titanium dioxide (TiO2) photo-catalysts with the aim of enhancing the overall photo-catalytic properties of the catalyst. Mesoporous silica dioxide (SBA-15), ...
The determination of activity coefficients at infinite dilution using gas-liquid chromatography.
Abstract available in PDF file.
The substitution behaviour of terpy polyglycoxyl and ruthenium-platinum complexes with biologically significant nucleophiles. A kinetic and mechanistic study.
The kinetics of two sets of complexes was investigated under pseudo first order conditions using UV-Visible spectrophotometry as a function of concentration and temperature. The first set consisting 4’-substituted terpy ...
Synthesis, characterization and antibacterial evaluation of novel substituted galactose thiazolidin-4-ones.
In this study, fifteen novel thiazolidinone derivatives were synthesized from galactose. In general it was observed that stereoselectivity for most of the 2R diastereomers was better than the 2S diastereomers. All compounds ...
The oxidative dehydrogenation of ɳ-octane using manganese oxide supported on SBA-15 catalysts.
Supported metal oxides have been widely used in heterogeneous catalysis, particularly for the activation of paraffin’s. For this study, manganese oxide supported on SBA-15 was used to investigate the oxidative dehydrogenation ...