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TB Chokwe, JO Okonkwo, LL Sibali and EJ Ncube 2015. Improved derivatization protocol for simultaneous determination of alkylphenol ethoxylates and brominated flame retardants followed by gas chromatography–mass spectrometry analyses. Water SA. 41, 2 WISA 2014 Special Edition (Mar. 2015). DOI:https://doi.org/10.4314/wsa.v41i2.03.