Browsing Natural and Agricultural Sciences by Subject "Welgegund"
Now showing items 1-7 of 7
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Aerosol optical properties at a savannah grassland site in South Africa
(North-West University (South Africa), 2020)Atmospheric aerosols affect the earth’s radiative budget in two ways: firstly, particles directly absorb and scatter short- and long-wave radiation and, secondly, particles indirectly influence the lifetime and physical ... -
Applicability of analytical techniques to quantify trace metals in particulate matter for source apportionment in South Africa
(North-West University (South Africa), 2020)The impacts of atmospheric trace metal species in particulate matter (PM) on human health and the environment is well documented. Rapid advances in the development of analytical techniques used for characterisation and ... -
Background ambient atmospheric mercury concentrations for the South African interior
(North-West University (South Africa), 2021)Atmospheric mercury (Hg) pollution is a global health concern. Once emitted into the atmosphere, gaseous elemental mercury (Hg0) can be converted to highly reactive gaseous oxidised mercury (Hg2+), which is deposited to ... -
Characterisation of air masses passing over the Vredefort Dome world heritage site
(North-West University (South Africa), 2015)In 2007, it was announced that the Vredefort Dome will be proclaimed South Africa’s seventh UNESCO (United Nations Educational, Scientific and Cultural Organisation) world heritage site. It is the largest and second oldest ... -
Factors governing rain chemistry and wet deposition at a regional background site in South Africa
(North-West University (South Africa), 2020)Wet deposition is an atmospheric sink that is essential to sustain the Earth-atmosphere biogeochemical balance. Deposited species can either be introduced as nutrients or toxins into a surface environment, which can be ... -
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 ... -
Temporal assessment of volatile organic compounds at a site with high atmospheric variability in the North–West Province
(North-West University, 2012)Volatile organic compounds (VOCs) are emitted into the atmosphere from biogenic and anthropogenic sources with atmospheric lifetimes ranging from minutes to months, depending on the specific VOC compound considered. It ...