Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/5518
Title: Improved derivatization protocol for simultaneous determination of alkylphenol ethoxylates and brominated flame retardants followed by gas chromatography-mass spectrometry analyses.
Authors: Okonkwo, Jonathan. O 
Sibali, Linda. L 
Chokwe, Tlou. B 
Ncube, Esper Jacobeth 
Keywords: alkylphenol ethoxylates;brominated flame retardants;gas chromatography-mass spectrometry;heptafluorobutyric anhydride derivatization;simultaneous determination
Issue Date: 2015
Publisher: Water SA
Source: Okonkwo, J, Sibali, L, Chokwe, T, & Ncube, E. 2015. Improved derivatization protocol for simultaneous determination of alkylphenol ethoxylates and brominated flame retardants followed by gas chromatography-mass spectrometry analyses. Water SA: WISA - Water Innovations Special Edition, 41(2): 189-193.
Abstract: An improved derivatization protocol for the simultaneous determination of alkylphenol ethoxylates and brominated flame retardants with heptafluorobutyric anhydride under triethylamine amine base was investigated. The derivatization reaction was completed in 30 min at 50°C using hexane as solvent. Under these conditions, it was observed that alkylphenol ethoxylates and tetrabromobisphenol A were derivatized successfully in the presence of hexabromocyclododecane, lower congeners of polybrominated biphenyls and polybrominated diphenyl ethers. The improved protocol was applied to recovery of analytes of interest from simulated water samples after solid phase extraction. The recoveries achieved were above 60%. The limit of detection and limit of quantification ranged from 0.01-0.20 µg/ℓ and 0.05-0.66 µg/ℓ, respectively.
URI: http://hdl.handle.net/10520/EJC168579
http://hdl.handle.net/11189/5518
http://dx.doi.org/10.4314/wsa.v41i2.03
ISSN: 0378-4738
Appears in Collections:Dr. Linda Lunga Sibali

Files in This Item:
File Description SizeFormat 
Okonkwo_J_Sibali_LL_Chokwe_T_Ncube,_E_Improved derivatization protocol_pdfMain article418.66 kBAdobe PDFView/Open
Show full item record

Page view(s)

45
Last Week
0
Last month
0
checked on Nov 29, 2020

Download(s)

20
checked on Nov 29, 2020

Google ScholarTM

Check


Items in Digital Knowledge are protected by copyright, with all rights reserved, unless otherwise indicated.