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http://hdl.handle.net/10773/20407
Title: | Determination of anionic surface active agents using silica coated magnetite nanoparticles modified with cationic surfactant aggregates |
Author: | Pena-Pereira, Francisco Duarte, Regina M. B. O. Trindade, Tito Duarte, Armando C. |
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 |
Issue Date: | 2013 |
Publisher: | ELSEVIER SCIENCE BV |
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. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20407 |
DOI: | 10.1016/j.chroma.2013.05.040 |
ISSN: | 0021-9673 |
Publisher Version: | 10.1016/j.chroma.2013.05.040 |
Appears in Collections: | CESAM - Artigos CICECO - Artigos DQ - Artigos |
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Determination of anionic surface active agents using silica coated magnetite nanoparticles modified with cationic surfactant aggregates_10.1016j.chroma.2013.05.040.pdf | 936.47 kB | Adobe PDF |
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