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

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dc.contributor.author Chiloane, Kgaugelo Euphinia
dc.date.accessioned 2006-11-09T13:05:59Z
dc.date.available 2006-11-09T13:05:59Z
dc.date.issued 2006-11-09T13:05:59Z
dc.identifier.uri http://hdl.handle.net/10539/1611
dc.description Student Number: 9503012G Master of Science. School of Geography, Archaeology and Environmental Studies en
dc.description.abstract A 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.extent 2716879 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.subject Volatile organic carbon (VOC) en
dc.subject Cape Town en
dc.subject Carbon budget en
dc.subject Radiation balance en
dc.subject Regional oxidant balance en
dc.subject Reactive gases en
dc.subject South African Weather Service en
dc.subject Gas chromatography en
dc.subject Flame ionisation detector (GC-FID) en
dc.subject Benzene en
dc.subject Toluene en
dc.subject Ethylbenzene en
dc.subject Xylene (BTEX) en
dc.title Volatile organic compounds(VOC's) analysis from Cape Town haze ll study en
dc.type Thesis en

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