Browsing by Author Okonkwo, JO

Showing results 1 to 6 of 6
Issue DateTitleAuthor(s)
2013Determination of selected phthalate esters compounds in water and sediments by capillary gas chromatography and flame ionization detectorSibali, LL ; Okonkwo, JO ; McCrindle, RI 
2017Distribution, exposure pathways, sources and toxicity of nonylphenol and nonylphenol ethoxylates in the environmentChokwe, Tlou. B ; Okonkwo, Jonathan. O ; Sibali, Linda. L 
2015An integrated method for the simultaneous determination of alkylphenol ethoxylates and brominated flame retardants in sewage sludge samples by ultrasonic-assisted extraction, solid phase clean-up, and GC-MS analysisChokwe, Tlou. B ; Okonkwo, Jonathan. O ; Sibali, Linda. L ; Ncube, Esper Jacobeth 
2012Optimization and simultaneous determination of alkyl phenol ethoxylates and brominated flame retardants in water after SPE and heptafluorobutyric anhydride derivatization followed by GC/MSChokwe, Tlou. B ; Okonkwo, Jonathan. O ; Sibali, Linda. L ; Ncube, Esper Jacobeth 
30-Nov-2012Riparian river/wetland plants and reed grasses as biosorbents for perfluorooctanoic acid (PFOA)Mudumbi, JBN ; Ntwampe, Seteno KO ; Muganza, M ; Okonkwo, JO 
2015A simplified analytical procedure for simultaneous determination of alkylphenol ethoxylates and brominated flame retardants in fish tissue samples from Vaal River, South Africa.Chokwe, Tlou. B ; Okonkwo, Jonathan. O ; Sibali, Linda. L ; Kruger, Elmari ; du Preez, Hein ; Hariram, Reveck ; Ncube, Esper Jacobeth