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Browsing by Subject "X-ray fluorescence spectroscopy (XRF)"

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Atmospheric fine particulate matter (PM2.5) in Bloemfontein, South Africa

Van der Westhuizen, Deidre; Howlett-Downing, Chantelle Margaret; Molnar, Peter; Boman, Johan; Wichmann, Janine; Von Eschwege, Karel G. (Taylor and Francis, 2023)

Please read abstract in the article.
Chemical and physical aspects of Lithium borate fusion

Loubser, Magdeleen (University of Pretoria, 2010-10-29)

Fused glass beads as a sample preparation method for X-ray Fluorescence spectroscopy (XRF) were introduced in 1957 by Claisse; it soon became the preferred method to introduce oxide samples to the spectrometer, because ...
Combining XRF and XRD analyses and sample preparation to solve mineralogical problems

Loubser, Maggi; Verryn, Sabine Marie Charlotte (Geological Society of South Africa, 2008)

X-ray Fluorescence Spectroscopy (XRF) has reached the stage where it is classified as a mature analytical technique. The theoretical principles are well understood. In addition modern instrumentation demonstrates enhanced ...
Comparison of nano-structured transition metal modified tri-metal MgMAl-LDHs (M = Fe, Zn, Cu, Ni, Co) prepared using co-precipitation

Gevers, Bianca R.; Naseem, Sajid; Leuteritz, Andreas; Labuschagne, F.J.W.J. (Frederick Johannes Willem Jacobus) (Royal Society of Chemistry, 2019-09-09)

Comparison of layered double hydroxides (LDHs) synthesised using different methods, conditions and post-treatment is difficult to achieve because these greatly modify their material properties. This paper aims to provide ...
Confined-direct electric curing of NaOH-activated fly ash based brick mixtures under free drainage conditions : Part 2. Confined-DEC versus oven curing

Ziolkowski, Mateusz; Kovtun, Maxim (Elsevier, 2018-07)

A novel accelerated curing technique – confined-DEC (Direct Electric Curing) – was compared with oven curing. Microstructural investigations revealed that under free drainage conditions non-uniform curing conditions were ...
Different transition metal combinations of LDH systems and their organic modifications as UV protecting materials for polypropylene (PP)

Naseem, Sajid; Lonkar, Sunil P.; Leuteritz, Andreas; Labuschagne, F.J.W.J. (Frederick Johannes Willem Jacobus) (Royal Society of Chemistry, 2018)

In this research, the use of layered double hydroxides (LDHs) as ultraviolet (UV) light-protecting additives for PP is explored. Different LDHs, such as ZnTi, ZnSn, ZnGa, ZnCr and CdCr LDHs, were prepared and their ...
Evaluation of letsoku and related Southern African clayey soils

Morekhure-Mphahlele, Refilwe; Focke, Walter Wilhelm; Grote, Wiebke; Masuku, Grace M.; Dzikiti, Loveness Nyaradzo; Motlotle, Ntikwe Pene; Ramukumba, Tendani S. (Elsevier, 2018-12)

The nature of letsoku and related clayey soils, traditionally used by indigenous Southern African communities for a wide range of purposes, was explored. Thirty nine samples were collected from Botswana, Lesotho, Swaziland, ...
High-energy asymmetric supercapacitor based on nickel cobalt oxide (NiCo2O4) nanostructure material and activated carbon derived from cocoa pod

Oyedotun, Kabir Oyeniran; Mirghni, Abdulmajid Abdallah; Fasakin, Oladepo; Tarimo, Delvina Japhet; Kitenge, Vianney Ngoyi; Manyala, Ncholu I. (American Chemical Society, 2021-12)

Please read abstract in the article.
Towards refining the classification of glass trade beads imported into Southern Africa from the 8th to the 16th century AD

Koleini, Farahnaz; Prinsloo, Linda Charlotta; Biemond, Wim M.; Colomban, Philippe; Ngo, Anh-Tu; Boeyens, Jan Christoffel Antonie; Van der Ryst, Maria M. (Elsevier, 2016-05)

Tracing the origin of glass trade beads excavated at archaeological sites can contribute significantly to dating a site and reconstructing prehistoric trade routes. Wood developed a temporally sensitive bead sequence ...
Unravelling the glass trade bead sequence from Magoro Hill, South Africa : separating pre-seventeenth-century Asian imports from later European counterparts

Koleini, Farahnaz; Prinsloo, Linda Charlotta; Biemond, Wim; Colomban, Philippe; Ngo, Anh‑Tu; Boeyens, Jan Christoffel Antonie; Van der Ryst, Maria M.; Van Brakel, Koos (BioMed Central, 2016-12-22)

Excavations conducted between 2010 and 2012 at Magoro Hill, a site in South Africa’s Limpopo Province frequented or intermittently occupied by African farming communities since the first millennium AD, yielded a substantial ...

Browsing by Subject "X-ray fluorescence spectroscopy (XRF)"

Browsing by Subject "X-ray fluorescence spectroscopy (XRF)"

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