English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/19648
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Determination of linear alkylbenzensulfonates in aqueous matrices by ion-pair solid-phase microextraction-in-port derivatization-gas chromatography-mass spectrometry

AuthorsAlzaga Morales, Roberto; Peña, Araceli; Ortiz Vera, Laura; Bayona Termens, Josep María
KeywordsLinear alkyl benzensulfonates
Water analysis
GC Derivatization
Environmental analysis
Issue Date24-Apr-2003
CitationJournal of Chromatography A: 999(1-2): 51-60 (2003)
AbstractTrace determination (low ng/ml) of linear alkylbenzensulfonates (LASs) in water was achieved by solid-phase microextraction (SPME) of ion-pairs formed with tetrabutylammonium. This ion-pairing reagent served two purposes. First, it allowed the extraction of LAS with the polydimethylsiloxane fiber by counterion association and second, the derivatization of the formed LAS ion pairs in the GC injection port at 300 °C to form the corresponding sulfonated butyl esters. The methodology developed allows the isomer specific determination of LAS at low detection limits (0.16–0.8 ng/ml), depending on the alkyl chain lengths of LASs with RSDs of 10–12%. Furthermore, the developed methodology was applied to urban wastewater and sea water and compared with a solid-phase extraction (SPE) method (e.g. C18 and strong anion-exchange sorbent) to obtain concordant values for urban wastewater. Moreover, the developed SPME methodology overcame the procedural blank and matrix-dependent recoveries found in the SPE methodologies at low LAS concentrations.
Description10 pages, 4 figures, 2 tables.-- PMID: 12885051 [PubMed].-- Printed version published May 30, 2003.-- Issue title: 'ExTech 2002 - Advances in Extraction Technologies'.
Publisher version (URL)http://dx.doi.org/10.1016/S0021-9673(03)00493-X
Appears in Collections:(IDAEA) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.