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Updated: Aug 9, 2026
Extraction and Characterization of Surfactants from Atmospheric Aerosols
Published on: April 21, 2017
Simplified spectrophotometric method using methylene blue for determining anionic surfactants: applications to the
E Jurado1, M Fernández-Serrano, J Núñez-Olea
1Department of Chemical Engineering, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, 18071 Granada, Spain. ejurado@ugr.es
Abstract:
In the present work, we propose a simplified spectrophotometric method for determining anionic surfactants, based on the formation of the ionic pair anionic surfactant-methylene blue (AS-MB). This method, in relation to the conventional analytic procedure, considerably reduces not only the quantity of chloroform used in extracting the ionic pair formed, but also the time and the quantity of sample necessary to perform the assay, eliminating the filtration stage. The method has been simplified by displacing the transfer equilibrium of the ionic pair AS-MB towards the organic phase, augmenting the volumetric relationship of chloroform/sample. The method proposed has been applied in the study of primary biodegradation kinetics of linear alkylbenzenesulfonate (LAS).
