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
|