Okonkwo, JO

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Results 1-4 of 4 (Search time: 0.001 seconds).

	Issue Date	Title	Author(s)
1	2015	A 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
2	2012	Optimization and simultaneous determination of alkyl phenol ethoxylates and brominated flame retardants in water after SPE and heptafluorobutyric anhydride derivatization followed by GC/MS	Chokwe, Tlou. B ; Okonkwo, Jonathan. O ; Sibali, Linda. L ; Ncube, Esper Jacobeth
3	2015	An 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 analysis	Chokwe, Tlou. B ; Okonkwo, Jonathan. O ; Sibali, Linda. L ; Ncube, Esper Jacobeth
4	2013	Determination of selected phthalate esters compounds in water and sediments by capillary gas chromatography and flame ionization detector	Sibali, LL ; Okonkwo, JO ; McCrindle, RI