Browsing Research Output by Author "Pieters, Rialet"
Now showing items 1-11 of 11
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Agrochemicals in freshwater systems and their potential as endocrine disrupting chemicals: a South African context
Horak, Ilzé; Horn, Suranie; Pieters, Rialet (Elsevier, 2021)South Africa is the largest agrochemical user in sub-Saharan Africa, with over 3000 registered pesticide products. Although they reduce crop losses, these chemicals reach non-target aquatic environments via leaching, spray ... -
A cell viability assay to determine the cytotoxic effects of water contaminated by microbes
Prinsloo, Suranie; Pieters, Rialet; Bezuidenhout, Carlos C. (Academy of Science of South Africa (ASSAf), 2013)Many South Africans do not have access to safe drinking water, so they have no alternative but to use water from contaminated sources that poses a health hazard. This poor state of affairs appears to be deteriorating. In ... -
Dioxin-like chemicals in soil and sediment from residential and industrial areas in central South Africa
Kylin, H.; Borgen, A.R.; Giesy, J.P.; Nieuwoudt, Claudine; Visser, Maret; Bouwman, Hindrik; Jordaan, Ilse; Quinn, Laura; Pieters, Rialet (Elsevier Science Ltd, 2009) -
Distribution profiles of selected organic pollutants in soils and sediments of industrial, residential and agricultural areas of South Africa
Kylin, Henrik; Borgen, Anders R.; Nieuwoudt, Claudine; Bouwman, Hindrik; Quinn, Laura; Pieters, Rialet (RSC Publication, 2009)Currently very little data exists on the presence of persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) in the South African environment. To address this data gap a preliminary study of a ... -
Experience in South Africa of combining bioanalysis and instrumental analysis of PCDD/Fs
De Vos, Jayne; Quinn, Laura; Roos, Claudine; Pieters, Rialet; Bouwman, Henk (Elsevier, 2013)We outline the experiences and the challenges of optimizing two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (GCxGC-TOF-MS) in conjunction with the H4IIE-luc bio-assay for analyzing ... -
Impact of potential COVID-19 treatment on South African water sources already threatened by pharmaceutical pollution
Horn, Suranie; Vogt, Bianca; Pieters, Rialet; Bouwman, Hindrik; Bezuidenhout, Carlos (Wiley, 2020)AAfter a cluster of human pneumonia cases in Wuhan City (China) on 7 January 2020, a novel coronavirus, the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), was identified as the causative agent of the ... -
Introgression of a cry1Ab transgene into open pollinated maize and its effect on Cry protein concentration and target pest survival
Erasmus, Reynardt; Pieters, Rialet; Du Plessis, Hannalene; Van den Berg, Johnnie; Hilbeck, Angelika (Public Library of Science, 2019)In Africa, the target pests of genetically modified Bt maize are lepidopteran stem borers, notably Busseola fusca (Lepidoptera: Noctuidae). Gene flow between Bt maize hybrids and open pollinated varieties (OPVs) that do ... -
May agricultural water sources containing mixtures of agrochemicals cause hormonal disturbances?
Horn, Suranie; Pieters, Rialet; Bohn, Thomas (Elsevier, 2020)Agricultural chemicals end up in the environment as complex mixtures and it is their combinatorial effects that need to be evaluated, rather than the traditional single effect of the active ingredients. This study emphasises ... -
Phytochemical-Based Evidence of the Health Benefits of Bidens Pilosa Extracts and Cytotoxicity
Idris, Oladayo Amed; Kerebba, Nasifu; Horn, Suranie; Maboeta, Mark Steve; Pieters, Rialet (Springer, 2023)Purpose Bidens pilosa L. is traditionally used as a flavouring agent in foods, in the treatment of diseases, in agriculture as a biopesticide and herbicide, and in the phytoremediation of soils contaminated with heavy ... -
Polycyclic aromatic hydrocarbons (pahs) in soil and sediment from industrial, residential, and agricultural areas in central South Africa: an initial assessment
Bouwman, Hindrik; Pieters, Rialet; Quinn, Laura Penelope; Nieuwoudt, Claudine; Kylin, Henrik; Borgen, Anders R. (Taylor & Francis, 2011)Polycyclic aromatic hydrocarbons (PAHs) are of global concern due to their ubiquitous presence, toxicity, and carcinogenicity. No data on PAHs in soils from South Africa have been published, even though it has the largest ... -
The rate of release of Cry1Ab protein from Bt maize leaves into water. Short communication
Du Pisanie, Amy; Du Preez, Louis; Van den Berg, Johnnie; Pieters, Rialet (WRC, 2019)Transgenic Bt maize plants are genetically modified to contain genes of Bacillus thuringiensis that encode for δ-endotoxins (Cry1Ab protein) that have insecticidal properties. These endotoxins target certain lepidopteran ...