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Title: Novel approaches for the elemental and morphological characterisation of particulate matter
Author: Barker, Michelle
ISNI:       0000 0004 5348 5582
Awarding Body: University of Sheffield
Current Institution: University of Sheffield
Date of Award: 2014
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In view of the environmental and health implications that particulate matter can cause the characterisation of the chemical and physical properties of particulates is of significant importance. This characterisation enables our understanding of particulate generation to be furthered and thus efficient abatement procedures can be devised. Novel methods to physically and chemically characterise particulates have been developed using a morphology analyser, an electrical low pressure impactor, a rotating drum sampler and a laser ablation unit. Further analysis was also completed using inductively coupled plasma emission spectroscopy, inductively coupled plasma mass spectrometry and scanning electron microscopy. These novel methods were utilised to complete two studies. The first study characterised four materials obtained from an integrated steelworks, two Brazilian iron ores, a blast furnace flue dust and a sinter dust. The second study examined laser generated aerosols produced from the ablation of six solid materials, a carbon rod, high purity zinc, polyethylene, a carbon steel, boron nitride and glass. Two different laser wavelengths and ablation atmospheres were also scrutinised. For both studies, morphological profiles were obtained alongside number and mass distributions. Chemical analysis of all particulates, which had been collected onto substrates, was completed to allow the quantitative determination of the multielement composition of each material, as well as the elemental distributions. The compiling of the obtained chemical and physical information permitted the generation of characteristic 'fingerprints' for each individual material. For the first study these fingerprints allowed an insight into the sources of emissions from an integrated steelworks. This insight could be used during on site testing to help determine further emission sources and allow the relevant abatement procedures to be put into place. For the second study these fingerprints have allowed an understanding of the complicated interactions between a laser and a solid material.
Supervisor: McCleod, Cameron Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available