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Full-Text Articles in Physical Sciences and Mathematics
Characterisation Of Polymer-Modified Electrodes, Karl Crowley
Characterisation Of Polymer-Modified Electrodes, Karl Crowley
Doctoral
In this work, two contrasting polymer-modified electrodes are investigated. Electroanalysis of lead in aqueous solutions was performed with an electrode coated with Nafion and the redox behaviour of the electronically conducting polymer, polypyrrole, was characterised. In the first study, a glassy carbon electrode coated with Nafion was used in the determination of lead through anodic stripping voltammetry (ASV). Initially the work consisted of optimising the preparation of the electrode and the experimental conditions resulting in a reproducible Nafion-modified electrode (NME) with a lifetime of several weeks. Two different stripping techniques were examined. High frequency square wave ASV was found to …
Genomic Instability Induced By Two Chemical Carcinogens, Cadmium And Nickel And By Particulate Titanium Debris From An Implant, Natasha Coen
Genomic Instability Induced By Two Chemical Carcinogens, Cadmium And Nickel And By Particulate Titanium Debris From An Implant, Natasha Coen
Doctoral
It has been established that cells surviving radiation may produce descendants many cell divisions post-exposure in which, there are high incidences of chromosomal aberrations arising de novo, gene mutation and lethal mutations/delayed cell death. These effects are collectively known as genomic instability and are induced at frequencies greater than that of spontaneous mutations. Formally this syndrome ‘genomic instability’ has only been definitively proven to occur following irradiation. This leads us to the consideration that heavy metals could also induce the genomic instability phenotype, and if so, it could have implications for those exposed through their occupation, through smoking or for …