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Updated: Jun 1, 2026

Extraction and Characterization of Surfactants from Atmospheric Aerosols
Published on: April 21, 2017
Separation of nonionic surfactants by capillary electrophoresis and high-performance liquid chromatography
1Institute of Analytical Chemistry, Department of Chemistry and Mineralogy, University of Leipzig, Linnéstrasse 3, 04103 Leipzig, Germany.
Abstract:
Fatty alcohol ethoxylates (FAEs) are applied in commercial formulations (laundry detergents) as complex mixtures of alkyl and ethoxylate homologues. Therefore, efficient analytical methods are required for product control. Capillary electrophoresis, a modern analytical separation technique, was used to separate FAEs in technical products and household formulations after derivatization with phthalic anhydride. The well-established high-performance liquid chromatography was used as reference and supplementary method. UV detection after derivatization with phenyl isocyanate or light scattering detection has been carried out. Sample components have been identified by standard addition or by comparison to known products. The peak pattern can be considered as a "fingerprint" of the product and is characteristic for a defined composition.
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