Gas chromatography–mass spectrometry analysis of alkylphenols in produced water from offshore oil installations as pentafluorobenzoate derivatives

A simple, highly selective and sensitive method for the determination of 14 representative alkylphenols from phenol (C0) to nonylphenol (C9) in produced water is described. Solid-phase extraction (SPE) by anion-exchange sorbent is used to extract alkylphenols from produced water. The samples are the...

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Bibliographic Details
Published in:Journal of Chromatography A 2004-12, Vol.1059 (1-2), p.131-141
Main Authors: Boitsov, Stepan, Meier, Sonnich, Klungsøyr, Jarle, Svardal, Asbjørn
Format: Article
Language:English
Subjects:
Alkylphenols
Analytical chemistry
Applied sciences
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Gas chromatographic methods
Gas Chromatography-Mass Spectrometry - methods
GC–MS (NCI)
Industrial wastewaters
Pentafluorobenzoyl chloride
Petroleum
Phenols - analysis
Pollution
Produced water
Solid-phase extraction
Wastewaters
Water Pollutants, Chemical - analysis
Water treatment and pollution
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Summary:A simple, highly selective and sensitive method for the determination of 14 representative alkylphenols from phenol (C0) to nonylphenol (C9) in produced water is described. Solid-phase extraction (SPE) by anion-exchange sorbent is used to extract alkylphenols from produced water. The samples are then derivatised by pentafluorobenzoyl chloride and analysed on GC–MS (negative ion chemical ionisation, NCI). The derivatisation procedure has been validated by means of two-level factorial design (27-4) experiments. Quantification is done with isotope dilution of five internal standards of different alkyl chain length. The detection limits were at low ng/l levels. A comparison with GC–MS analysis of non-derivatised alkylphenol samples revealed the advantage of derivatisation as described in the method.
ISSN:0021-9673
DOI:10.1016/j.chroma.2004.09.084