An overview of exposure and management of persistent organic pesticides in SwazilandOKONKWO, Jonathan O.International journal of environmental studies. 2003, Vol 60, Num 4, pp 335-342, issn 0020-7233, 8 p.Article

Physico-chemical characteristics and pollution levels of heavy metals in the rivers in Thohoyandou, South AfricaOKONKWO, Jonathan O; MOTHIBA, M.Journal of hydrology (Amsterdam). 2005, Vol 308, Num 1-4, pp 122-127, issn 0022-1694, 6 p.Article

Polybrominated diphenyl ethers (PBDEs) in leachates from selected landfill sites in South AfricaODUSANYA, David O; OKONKWO, Jonathan O; BOTHA, Ben et al.Waste management (Elmsford). 2009, Vol 29, Num 1, pp 96-102, issn 0956-053X, 7 p.Article

Analysis of major congeners of polybromobiphenyls and polybromodiphenyl ethers in office dust using high resolution gas chromatography-mass spectrometryKEFENI, Kebede K; OKONKWO, Jonathan O.Chemosphere (Oxford). 2012, Vol 87, Num 9, pp 1070-1075, issn 0045-6535, 6 p.Article

Determination of selected phthalate esters compounds in water and sediments by capillary gas chromatography and flame ionization detectorSIBALI, Linda L; OKONKWO, Jonathan O; MCCRINDLE, Rob I et al.Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering. 2013, Vol 48, Num 11-12, pp 1365-1377, 13 p.Article

Influence of Gas Chromatographic Parameters on Determination of Decabromodiphenyl EtherKEFENI, Kebede K; OKONKWO, Jonathan O; BOTHA, Ben M et al.Chromatographia (Wiesbaden). 2011, Vol 73, Num 9-10, pp 965-973, issn 0009-5893, 9 p.Article

Improved derivatisation methods for the determination of free cyanide and cyanate in mine effluentZVINOWANDA, Caliphs M; OKONKWO, Jonathan O; GURIRA, Rogers C et al.Journal of hazardous materials. 2008, Vol 158, Num 1, pp 196-201, issn 0304-3894, 6 p.Article

Concentrations of polybromobiphenyls and polybromodiphenyl ethers in home dust: Relevance to socio-economic status and human exposure rateKEFENI, Kebede K; OKONKWO, Jonathan O; BOTHA, Ben M et al.Science of the total environment. 2014, Vol 470-71, pp 1250-1256, issn 0048-9697, 7 p.Article

Characterization of PM10 samples from Vanderbijlpark in South AfricaMOJA, Shadung J; MNISI, Jeremiah S; NINDI, Mathews M et al.Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering. 2013, Vol 48, Num 1-2, pp 99-107, 9 p.Article

Application of maize tassel for the removal of Pb, Se, Sr, U and V from borehole water contaminated with mine wastewater in the presence of alkaline metalsZVINOWANDA, Caliphs M; OKONKWO, Jonathan O; SEKHULA, Mahlatse M et al.Journal of hazardous materials (Print). 2009, Vol 164, Num 2-3, pp 884-891, issn 0304-3894, 8 p.Article

Optimization 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 et al.Chromatographia (Wiesbaden). 2012, Vol 75, Num 19-20, pp 1165-1176, issn 0009-5893, 12 p.Article

Physicochemical Characterization of Maize Tassel as an Adsorbent. I. Surface Texture, Microstructure, and Thermal StabilityZVINOWANDA, Caliphs M; OKONKWO, Jonathan O; AGYEI, Nana M et al.Journal of applied polymer science (Print). 2009, Vol 111, Num 4, pp 1923-1930, issn 0021-8995, 8 p.Article