Determination of anionic surface active agents using silica coated magnetite nanoparticles modified with cationic surfactant aggregates
authors Pena-Pereira, F; Duarte, RMBO; Trindade, T; Duarte, AC
nationality International
journal JOURNAL OF CHROMATOGRAPHY A
author keywords Magnetic nanoparticles; Extraction; Sample preparation; Preconcentration; Anionic surfactants; Linear alkylbenzene sulfonates
keywords LINEAR ALKYLBENZENE SULFONATES; SOLID-PHASE EXTRACTION; ENVIRONMENTAL WATER SAMPLES; PERFORMANCE LIQUID-CHROMATOGRAPHY; ELECTROPHORESIS-MASS SPECTROMETRY; SODIUM DODECYL-SULFATE; WASTE-WATER; CAPILLARY-ELECTROPHORESIS; TRACE DETERMINATION; BIOLOGICAL SAMPLES
abstract The development of a novel methodology for extraction and preconcentration of the most commonly used anionic surface active agents (SAAs), linear alkylbenzene sulfonates (LAS), is presented herein. The present method, based on the use of silica-magnetite nanoparticles modified with cationic surfactant aggregates, was developed for determination of C-10-C-13 LAS homologues. The proposed methodology allowed quantitative recoveries of C-10-C-13 LAS homologues by using a reduced amount of magnetic nanoparticles. Limits of detection were in the range 0.8-1.9 mu g L-1 for C-10-C-13 LAS homologues, while the repeatability, expressed as relative standard deviation (RSD), ranged from 2.0 to 3.9% (N = 6). Finally, the proposed method was successfully applied to the analysis of a variety of natural water samples. (C) 2013 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0021-9673
year published 2013
volume 1299
beginning page 25
ending page 32
digital object identifier (doi) 10.1016/j.chroma.2013.05.040
web of science category Biochemical Research Methods; Chemistry, Analytical
subject category Biochemistry & Molecular Biology; Chemistry
unique article identifier WOS:000321424000004
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journal impact factor 3.716
5 year journal impact factor 3.713
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