Separation and identification of nonylphenylethylene oxide oligomers by high-performance liquid chromatography with UV and mass spectrometric detection

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Abstract

Nonylphenylethylene oxide surfactants were separated on an alumina column using an ethylene oxide-n-hexane mixture as the mobile phase, and UV and MS detection. Several well separated, large peaks and some small, partly separated peaks were detected. It was found that the main fractions elute log-equidistantly and they correspond to the nonylphenylethylene oxide oligomers with a given number of ethylene oxide units, and the small peaks contain isomers, probably surfactants with different positions of the nonylgroup at the phenyl ring. The method validation showed no significant differences between the intra-day and inter-day values of the area percentages and their standard deviations, showing the good reproducibility of the determination of the area percentages during at least three consecutive days. Significant differences were found between the intra-day and inter-day values of the standard deviation of the retention times, which indicates that the determination of the retention time is less reproducible than that of the area percentages. Copyright (C) 1998 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)297-302
Number of pages6
JournalJournal of Chromatography A
Volume819
Issue number1-2
DOIs
Publication statusPublished - Sep 11 1998

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Ethylene Oxide
High performance liquid chromatography
Oligomers
Surface-Active Agents
Oxides
High Pressure Liquid Chromatography
Aluminum Oxide
Isomers
n-hexane

Keywords

  • Nonylphenylethylene oxide oligomers
  • Surfactants, non-ionic

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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title = "Separation and identification of nonylphenylethylene oxide oligomers by high-performance liquid chromatography with UV and mass spectrometric detection",
abstract = "Nonylphenylethylene oxide surfactants were separated on an alumina column using an ethylene oxide-n-hexane mixture as the mobile phase, and UV and MS detection. Several well separated, large peaks and some small, partly separated peaks were detected. It was found that the main fractions elute log-equidistantly and they correspond to the nonylphenylethylene oxide oligomers with a given number of ethylene oxide units, and the small peaks contain isomers, probably surfactants with different positions of the nonylgroup at the phenyl ring. The method validation showed no significant differences between the intra-day and inter-day values of the area percentages and their standard deviations, showing the good reproducibility of the determination of the area percentages during at least three consecutive days. Significant differences were found between the intra-day and inter-day values of the standard deviation of the retention times, which indicates that the determination of the retention time is less reproducible than that of the area percentages. Copyright (C) 1998 Elsevier Science B.V.",
keywords = "Nonylphenylethylene oxide oligomers, Surfactants, non-ionic",
author = "{\'A}gnes K{\'o}sa and A. Dob{\'o} and K. V{\'e}key and E. Forg{\'a}cs",
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language = "English",
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T1 - Separation and identification of nonylphenylethylene oxide oligomers by high-performance liquid chromatography with UV and mass spectrometric detection

AU - Kósa, Ágnes

AU - Dobó, A.

AU - Vékey, K.

AU - Forgács, E.

PY - 1998/9/11

Y1 - 1998/9/11

N2 - Nonylphenylethylene oxide surfactants were separated on an alumina column using an ethylene oxide-n-hexane mixture as the mobile phase, and UV and MS detection. Several well separated, large peaks and some small, partly separated peaks were detected. It was found that the main fractions elute log-equidistantly and they correspond to the nonylphenylethylene oxide oligomers with a given number of ethylene oxide units, and the small peaks contain isomers, probably surfactants with different positions of the nonylgroup at the phenyl ring. The method validation showed no significant differences between the intra-day and inter-day values of the area percentages and their standard deviations, showing the good reproducibility of the determination of the area percentages during at least three consecutive days. Significant differences were found between the intra-day and inter-day values of the standard deviation of the retention times, which indicates that the determination of the retention time is less reproducible than that of the area percentages. Copyright (C) 1998 Elsevier Science B.V.

AB - Nonylphenylethylene oxide surfactants were separated on an alumina column using an ethylene oxide-n-hexane mixture as the mobile phase, and UV and MS detection. Several well separated, large peaks and some small, partly separated peaks were detected. It was found that the main fractions elute log-equidistantly and they correspond to the nonylphenylethylene oxide oligomers with a given number of ethylene oxide units, and the small peaks contain isomers, probably surfactants with different positions of the nonylgroup at the phenyl ring. The method validation showed no significant differences between the intra-day and inter-day values of the area percentages and their standard deviations, showing the good reproducibility of the determination of the area percentages during at least three consecutive days. Significant differences were found between the intra-day and inter-day values of the standard deviation of the retention times, which indicates that the determination of the retention time is less reproducible than that of the area percentages. Copyright (C) 1998 Elsevier Science B.V.

KW - Nonylphenylethylene oxide oligomers

KW - Surfactants, non-ionic

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