Volatile organic compounds(VOC's) analysis from Cape Town haze ll study

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dc.contributor.authorChiloane, Kgaugelo Euphinia
dc.date.accessioned2006-11-09T13:05:59Z
dc.date.available2006-11-09T13:05:59Z
dc.date.issued2006-11-09T13:05:59Z
dc.descriptionStudent Number: 9503012G Master of Science. School of Geography, Archaeology and Environmental Studiesen
dc.description.abstractA brown haze which builds-up over Cape Town under calm and cold weather conditions causes public concern. The brown haze is thought to be due to the gaseous and particulate emissions from the city, industries, traffic and townships in the Cape Town region. Volatile organic carbon (VOCs) compounds are an important component of the haze layer particularly because of their reactivity. VOCs play an important role in the carbon budget and radiation balance, regional oxidant balance, and in the distribution of ozone and other reactive gases, both at the regional and global scale. In this study the variation in ambient VOC concentrations during brown and non-brown haze days over Cape Town during July and August 2003 were characterised. Ambient air samples were collected in evacuated stainless steel canistes from the South African Weather Service (SAWS) research aircraft (Aerocommander, ZS-JRB) and later analysed by gas chromotography equipped with a flame ionisation detector (GC-FID). Benzene, toluene, ethylbenzene and xylene (BTEX) were the specific VOCs targeted for this study. Comparable meteorology data was also collected to determine the effects of wind field and atmospheric stability on BTEX concentrations.en
dc.format.extent2716879 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10539/1611
dc.language.isoenen
dc.subjectVolatile organic carbon (VOC)en
dc.subjectCape Townen
dc.subjectCarbon budgeten
dc.subjectRadiation balanceen
dc.subjectRegional oxidant balanceen
dc.subjectReactive gasesen
dc.subjectSouth African Weather Serviceen
dc.subjectGas chromatographyen
dc.subjectFlame ionisation detector (GC-FID)en
dc.subjectBenzeneen
dc.subjectTolueneen
dc.subjectEthylbenzeneen
dc.subjectXylene (BTEX)en
dc.titleVolatile organic compounds(VOC's) analysis from Cape Town haze ll studyen
dc.typeThesisen
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