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Now showing items 21-30 of 35
Measurement of organic compounds in atmospheric aerosols collected at Welgegund, South Africa
(North-West University, 2018)
Atmospheric aerosols or particulate matter (PM) are a complex mixture of solid and liquid particulates suspended in the atmosphere that originate from natural and anthropogenic sources. These species influence climate ...
Factors influencing surface ozone variability over continental South Africa and implications for air quality and agriculture
(North-West University, 2018)
Extensive scientific research has been conducted on surface ozone (O3) concentrations over several decades in North America and Europe. Through these efforts, significant information is available on the role of chemistry, ...
Spatial and temporal deposition of selected biogeochemical important trace species in South Africa
(North-West University, 2018)
The concern of potential adverse environmental effects due to increased anthropogenic emissions to the atmosphere necessitates the need for long-term atmospheric deposition programmes. Wet and dry depositions of emitted ...
Comparison of physical properties of oxidative sintered pellets produced with UG2 or metallurgical grade South African chromite : a case study
(2014)
The Bushveld Igneous Complex (BIC) in South Africa holds approximately three
quarters of the world’s viable chromite ore deposits. Most chromite is used for the
production of ferrochromium (FeCr), which is a relatively ...
Spatial and temporal assessment of atmospheric organic carbon and black carbon concentrations at South African DEBITS sites
(2014)
The baseline of uncertainty in aerosol radiative forcing is large and depends on aerosol characteristics (e.g. size and composition), which can vary significantly on a regional scale. Sources (natural and anthropogenic) ...
Spatial and temporal deposition of selected biogeochemical important trace species in South Africa
(North-West University, Potchefstroom Campus, 2018)
The concern of potential adverse environmental effects due to increased anthropogenic emissions to
the atmosphere necessitates the need for long-term atmospheric deposition programmes. Wet and dry
depositions of emitted ...
The impact of raw material selection on damring formation and pre-reduction during ferrochrome production
(North-West University, 2018)
Electricity consumption is the largest cost component in the production of ferrochrome (FeCr). Currently the pelletised chromite pre-reduction process (solid-state reduction of chromite) is the process option with the ...
Spatial and temporal assessment of pollutants in the Highveld Priority Area, South Africa
(North-West University, 2008)
One of the major concerns that has been facing South Africa in recent years is the amount of gaseous pollutants emitted into the atmosphere. The Mpumalanga province is largely an industrialised area, which contributes ...
Volatile organic compound measurements at a grazed savannah grassland in South Africa
(North-West University (South Africa), Potchefstroom Campus, 2016)
Various gaseous and aerosol species that are emitted directly from anthropogenic and biogenic
sources, as well as secondary formed species, are present and mixed in the giant reactor of the
atmosphere, where multiple ...
Assessment of atmospheric trace metals and water soluble ionic species at two regional background sites
(North-West University (South Africa), Potchefstroom Campus, 2015)
In this study, atmospheric trace metals and water soluble ionic species were
investigated. Five research articles are presented. In the first two articles specific trace
metals species, i.e. mercury and hexavalent chromium, ...