Browsing Faculty of Natural Science by Author "Baker, Priscilla"
Now showing items 1-20 of 26
-
Amperometric biosensor systems prepared on poly (aniline-ferrocenium hexafluorophosphate) composites doped with poly(vinyl sulfonic acid sodium salt)
Ndangili, Peter Munyao (University of the Western Cape, 2008)The main hypothesis in this study is the development of a nanocomposite mediated amperometric biosensor for detection of hydrogen peroxide. The aim is to combine the electrochemical properties of both polyaniline and ... -
Application of Sutherlandia flutescens in cosmetic skin industry (phytochemical fingerprinting and its activity against skin immune diseases.
Msebele, Bongiwe (University of the Western Cape, 2019)Hyperpigmentation disorders such as melasma, freckles and black-pigmented spots on the surface of the skin are often a result of increased over production and accumulation of melanin pigments in the skin. In melanin ... -
Boron-doped Diamond Sensors for the Determination of Organic Compounds in Aqueous Media
Hess, Euodia (University of the Western Cape, 2010)In electrochemical oxidation treatment of wastewater, the electrode material is an important parameter in optimizing oxidative electrochemical processes, since the mechanism and products of several anodic reactions are ... -
Charge Transfer and Capacitive Properties of Polyaniline/ Polyamide Thin Films
Abrahams, Dhielnawaaz (University of the Western Cape, 2018)Blending polymers together offers researchers the ability to create novel materials that have a combination of desired properties of the individual polymers for a variety of functions as well as improving specific properties. ... -
Determination of Chromium(VI), Vanadium(V), Selenium(IV) and Zinc(II) in the City of Cape Town's potable water by stripping voltammetry at boron doped diamond electrodes
Fillis, Ismarelda Rosaline (University of the Western Cape, 2011)The main aim of this study is to investigate theelectrochemical determination of two beneficial (selenium and zinc) and two toxic (chromium and vanadium) metals in the potable water within the City of Cape Town's ... -
Development of amperometric biosensor with cyclopentadienylruthenium (II) thiolato schiff base self-assembled monolayer (SAM) on gold
Ticha, Lawrence Awa (University of the Western Cape, 2007)A novel cyclopentadienylruthenium(II) thiolato Schiff base, [Ru(SC6H4NC(H)C6H4OCH2CH2SMe)(η5-C2H5]2 was synthesized and deposited as a selfassembled monolayer (SAM) on a gold electrode. Effective electronic communication ... -
Electro-analytical protocols for quantitative assessment of phenols in South African rooibos, green and black tea samples
Abrahams, Dhielnawaaz (University of Western Cape, 2022)The worldwide tea market was estimated at almost 200 billion U.S. dollars in 2020. It is perceived to rise to 318 billion dollars by 2025. Tea has a long history of prominence around the world. Increases in tea production ... -
Electrochemical actuation potential of diaminophenazine linked pyrrole derivatives
Ward, Meryck (2013)A novel monomer (Phenazine-2,3-diimino(pyrrole-2-yl)–PDP) derived from the condensation reaction between 2,3-diaminophenazine and a pyrrole derivative has been synthesized as a hinge molecule in the design of a zig-zag ... -
Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors
Arotiba, Omotayo Ademola (University of the Western Cape, 2008)In this thesis, I present the electrochemical studies of three dendrimeric polypropylene imine (PPI) nanomaterials and their applications as a platform in the development of a novel label free DNA nanobiosensor based on ... -
Encapsulating of humic acid in hydrogel matrix for the complexation of heavy metals in aqueous solutions
Sithi, Rabelani Leonard (University of Western Cape, 2020)Rapid industrialization growth without appropriate emission standards for discharging environmental pollutants had exposed the ecosystem to detrimental effect. Due to their bioaccumulation propensity in organisms, toxicity ... -
Evaluation of cucurbituril modified screen printed electrodes as efficient host guest agents for small metal cation detection
Murray, Alenzo Dylan (University of the Western Cape, 2022)Heavy metals are considered an essential micronutrient and of biological importance for humans and animals. When consumed in adequate amounts supports the body’s immune system by protecting against the effects of free ... -
Hydrogel encapsulated biosensors for the detection of biologically significant vanadium and selenium
Muya, Francis Ntumba (University of the Western Cape, 2017)Vanadium and selenium salts are toxic in large amounts, but trace amounts are necessary for cellular function in many organisms. Exposure to high level of selenium has been linked to delays in early childhood development ... -
Hydrophilic Polysulfone-Hydrogel Membrane Material for Improved Nanofiltration in Wastewater Treatment
Muya, Francis Ntumba (University of the Western Cape, 2013)Over the last decade polysulfone membranes have been demonstrated to be one of the best membrane types in wastewater treatment, especially in ultrafiltration, owing to its mechanical robustness, structural and chemical ... -
Metal nanoparticle modified polysulfone membrane for water treatment
Phelane, Lisebo (University of the Western Cape, 2013)Membrane separation processes have been widely applied in the treatment of wastewater with polysulfone (PSF) polymer membrane being the most frequently used in ultrafiltration of wastewater due to its chemical and structural ... -
Metallic nanoparticles with polymeric shell: A multifunctional platform for application to biosensor
Ngema, Xolani Terrance (University of the Western Cape, 2018)Tuberculosis (TB) is an airborne disease caused by Mycobacterium tuberculosis (MTB) that usually affects the lungs leading to severe coughing, fever and chest pains. It was estimated that over 9.6 million people worldwide ... -
Microfluidic paper based electrochemical sensing devices
Louw, Clementine Juliat (University of the Western Cape, 2019)Microfluidic paper based electrochemical sensing devices (μPEDs) provides a new way for point of care testing (POCT). μPEDs offer an inexpensive, portable, easy to use technology too monitor the environment and diagnose ... -
Molecularly imprinted polymers for detection of volatile organics associated with fuel combustion
Ngwanya, Olwethu (University of the Western Cape, 2018)Pollutants such as polycyclic aromatic hydrocarbons (PAHs) are known for their toxic effects which may lead to the cause of degenerative diseases in both humans and animals. PAHs are widespread in the environment, and may ... -
Nanocomposite immunosensor for anti-transglutaminase antibody
West, Natasha (University of the Western Cape, 2009)Coeliac disease (CD) is a gluten intolerance condition that results in the flattening of the villi, which line the bowel. It is the most common cause of malabsorption of food nutrients. This inability to absorb sufficient ... -
Nanostructured polypyrrole impedimetric sensors for anthropogenic organic pollutants
Akinyeye, Richard Odunayo (University of the Western Cape, 2007)Polypyrrole composites of polyaromatic hydrocarbon sulphonic acids (β–naphthalene sulphonic acid (NSA) and 1, 2-napthaquinone-4-sulphonic acid (NQS)), as well as those of transition metal oxides (tungsten (VI) oxide (WO3) ... -
Novel 3-mercaptopropionic acid capped iridium selenide quantum dots modified electrochemical immunosensor for the detection of fish toxin, nodularin
Nxusani, Ezo (University of the Western Cape, 2012)A novel 3-mercaptopropionic acid capped iridium selenide quantum dots based label free impedimetric immunosensor was successfully constructed. The 3-mercaptopropionic acid capped iridium selenide quantum dots synthesized ...