Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld

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dc.contributor.advisorFey, Martin Ven_ZA
dc.contributor.advisorWillis, Jamesen_ZA
dc.contributor.authorVan Tienhoven, Anne Miekeen_ZA
dc.date.accessioned2016-08-22T12:21:36Z
dc.date.available2016-08-22T12:21:36Z
dc.date.issued1997en_ZA
dc.description.abstractAtmospheric pollution on the South African high veld is perceived as a concern because of the combination of heavy industry and climatic features that prevail in the region. The frequent occurrence of surface inversions (80 - 90 % of days in the winter months), permits the accumulation of pollutants near ground level. Although industrial stacks, and those of power stations in particular, are generally able to emit gaseous and particulate pollutants above the boundary layer, looping and fumigation of plumes may occur under convective conditions. Under such circumstances, the concentration of pollutants at ground level may be high, especially within 4 km of the stack. Since considerable damage to European and North American ecosystems has occurred as a result of atmospheric pollution, concerns were first raised in a report by Tyson, Kruger and Louw in 1988, that similar effects may be taking place on the eastern highveld region of South Africa. The current study was prompted in direct response to these concerns. The first major objective was to establish long-term monitoring sites whereby changes in the pedosphere in response to atmospheric inputs could be detected. The second objective was to characterise the soil collection and to determine whether any impacts are detectable at this early stage. Arnot power station was selected as the focal point of the study as it is a base-load power station, is the most distant from the industrial centres of Witbank, Middelburg and Gauteng and has been in operation for over twenty years. Fifteen sampling sites located in an arc ranging ENE to SE downwind of the power station were selected. Both topsoil and subsoil were sampled at each site. Details of geographical co-ordinates and site features were noted to enable reproducible resampling. Sampling took place in August 1996, but three sites were visited again in October and resampled to test the reproducibility of sampling. Although not statistically comparable, the soils of each site showed similar results for key analyses, which included EC, pH, organic carbon and acid neutralising capacity.en_ZA
dc.identifier.apacitationVan Tienhoven, A. M. (1997). <i>Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Geological Sciences. Retrieved from http://hdl.handle.net/11427/21407en_ZA
dc.identifier.chicagocitationVan Tienhoven, Anne Mieke. <i>"Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 1997. http://hdl.handle.net/11427/21407en_ZA
dc.identifier.citationVan Tienhoven, A. 1997. Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Van Tienhoven, Anne Mieke AB - Atmospheric pollution on the South African high veld is perceived as a concern because of the combination of heavy industry and climatic features that prevail in the region. The frequent occurrence of surface inversions (80 - 90 % of days in the winter months), permits the accumulation of pollutants near ground level. Although industrial stacks, and those of power stations in particular, are generally able to emit gaseous and particulate pollutants above the boundary layer, looping and fumigation of plumes may occur under convective conditions. Under such circumstances, the concentration of pollutants at ground level may be high, especially within 4 km of the stack. Since considerable damage to European and North American ecosystems has occurred as a result of atmospheric pollution, concerns were first raised in a report by Tyson, Kruger and Louw in 1988, that similar effects may be taking place on the eastern highveld region of South Africa. The current study was prompted in direct response to these concerns. The first major objective was to establish long-term monitoring sites whereby changes in the pedosphere in response to atmospheric inputs could be detected. The second objective was to characterise the soil collection and to determine whether any impacts are detectable at this early stage. Arnot power station was selected as the focal point of the study as it is a base-load power station, is the most distant from the industrial centres of Witbank, Middelburg and Gauteng and has been in operation for over twenty years. Fifteen sampling sites located in an arc ranging ENE to SE downwind of the power station were selected. Both topsoil and subsoil were sampled at each site. Details of geographical co-ordinates and site features were noted to enable reproducible resampling. Sampling took place in August 1996, but three sites were visited again in October and resampled to test the reproducibility of sampling. Although not statistically comparable, the soils of each site showed similar results for key analyses, which included EC, pH, organic carbon and acid neutralising capacity. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld TI - Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld UR - http://hdl.handle.net/11427/21407 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21407
dc.identifier.vancouvercitationVan Tienhoven AM. Assessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highveld. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21407en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Geological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherGeological Scienceen_ZA
dc.subject.otherGeochemistryen_ZA
dc.titleAssessment of long-term air pollution impacts on soil properties in the vicinity of Arnot power station on the South African highvelden_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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