English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/62194
Share/Impact:
Statistics
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:

Title

Priority pesticides and their degradation products in river sediments from Portugal

AuthorsVillaverde Capellán, J. ; Hildebrandt, Alain; Lacorte Bruguera, Silvia ; Morillo González, Esmeralda ; Maqueda Porras, Celia ; Viana, P.; Barceló, Damià
Issue Date2008
PublisherElsevier
CitationScience of the Total Environment 390(2-3): 507-513 (2008)
AbstractA multiresidue gas chromatography-mass spectrometry method was developed to determine 28 priority pesticides of different chemical families (organochlorine, organophosphorus, triazines, anilides) together with some of their transformation products in river sediment. Ultrasonic, Soxhlet and pressurized liquid extraction (PLE) methods were compared in spiking experiments using acetone:hexane (1:1) followed by alumina solid phase extraction cartridges or in-cell alumina clean-up for PLE. All extraction techniques produced acceptable recoveries for the pesticides under study, although Soxhlet extraction produced the lowest recoveries for 2,4-DDE, trifluralin, lindane, and hexachlorobenzene (< 50%) whereas ultrasonic extraction resulted in low recoveries for hexachlorobenzene and lindane (< 50%). However, PLE using in-cell alumina clean-up produced an overestimation of more apolar compounds, given the amount of coextracted compounds. Limits of detection at the low μg L- 1-ng L- 1 levels were obtained with Soxhlet and ultrasonic extraction, while PLE produced higher variability due to the lack of exhaustive clean-up. Given the simplicity of ultrasonic extraction, this method was further employed to determine target compounds in river sediments collected in Portugal. Lindane was detected in practically all samples, followed by trace levels of the pesticides simazine, diazinon, fenitrothion, and parathion-methyl.
URIhttp://hdl.handle.net/10261/62194
DOI10.1016/j.scitotenv.2007.10.034
Identifiersdoi: 10.1016/j.scitotenv.2007.10.034
issn: 0048-9697
e-issn: 1879-1026
Appears in Collections:(IRNAS) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


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