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Qualitative estimation of atrazine, hydroxyatrazine and 6-methoxy-2-benzoxazinone (MBOA) in maize plants
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Malan --- , Republic of South Africa J.H. Visser --- Department of Botany, Republic of South Africa H.A. van de Venter --- Department of Botany, Republic of South AfricaA rapid and simple method for the extraction and quantification of the herbicide atrazine, the atrazine hydroxylating agent in maize plants DIMBOA, and the hydroxylated product hydroxy-atrazine, is described. These substances were quantified by means of HPLC techniques, employing a... -
Sampling variation in the quantification of fumonisins in maize samples
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B. Janse van Rensburg --- , South Africa B.C. Flett --- , South Africa N.W. Mc Laren --- Department of Plant Sciences, 9300 South Africa A.H. Mc Donald --- ,Fumonisins produced by F. verticillioides and F. proliferatum cause mycotoxicoses in horses, swine and rats and have been associated with oesophageal cancer in humans. Accurate measurement of mycotoxins is essential for determining the safety of grain and their products for... -
Detection methods and their limitations: PSP toxins in the southern puffer fish Sphoeroides nephelus responsible for human poisoning events in Florida in 2004
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Etheridge J Deeds S Hall K White L Flewelling J Abbott J Landsberg S Conrad D Bodager G JackowHigh-performance liquid chromatography (HPLC) with post-column derivatisation and fluorescence detection has been commonly used for analysing paralytic shellfish poisoning (PSP) toxins. However, identifying peaks with confidence requires that steps be taken beyond simple chromatographic runs, owing in part to the... -
Cyanobacteria species identified in the Weija and Kpong reservoirs, Ghana, and their implications for drinking water quality with respect to microcystin
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Addico J Hardege J Komarek P Babica KAA de Graft-JohnsonThe Kpong and Weija reservoirs supply drinking water to Accra, Ghana. This study was conducted to identify the cyanobacteria present in these reservoirs and to ascertain whether current treatment processes remove whole cyanobacteria cells from the drinking water produced. Cyanotoxins... -
Degradation of paracetamol and other constituents in Perfalgan®
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Catherine Curran --- Department of Anaesthesia, South AfricaBackground: The manufacturers of Perfalgan®, a formulation of intravenous paracetamol, recommend that each ampoule be used once only. This is most likely due to concerns regarding degradation of paracetamol or other ingredients in the solution, and sterility issues. However, in...