English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/62980
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 | DATACITE
Exportar a otros formatos:


Analysis of whole congener mixtures of polybromodiphenyl ethers by gas chromatography-mass spectrometry in both environmental and biological samples at femtogram levels

AuthorsVizcaíno, Esther ; Arellano, Lourdes ; Fernández, Pilar ; Grimalt, Joan O.
Issue Date2009
CitationJournal of Chromatography A 1216 (25) : 5045-5051 (2009)
AbstractA sensitive and selective method for the determination of the whole congener distribution of polybromodiphenyl ethers in environmental and biological samples in one single instrumental run is described. The method is based on gas chromatography coupled to low-resolution mass spectrometry in negative ion chemical ionization mode. It allows determination of these compounds at concentration levels lower than 10-14 g. A programmed temperature vaporization injector has been used to ensure maximum compound transfer to the chromatographic column while maintaining low thermal degradation levels of the more brominated congeners. Selectivity was increased by modification of the MS source parameters for optimization of the abundance of the high mass fragment ions. Under optimized condition, good repeatability (1.7-9.1%) and reproducibility (4.1-20%), and low detection limits, ranging between 1.5 and 15 pg ml-1, were obtained. These features afforded reliable quantification of these compounds in snow and human samples at the concentrations in which these compounds are found. © 2009 Elsevier B.V. All rights reserved.
Identifiersdoi: 10.1016/j.chroma.2009.04.049
issn: 0021-9673
e-issn: 1873-3778
Appears in Collections:(IDAEA) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

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