Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2956
Título: Use and reuse of SPE disks for the determination of pyrethroids in water by GC-ECD
Autor: Domingues, Valentina F.
Cabral, Miguel
Alves, Arminda
Delerue-Matos, Cristina
Palavras-chave: Pesticides
Pyrethroids
Solid-phase extraction
Water analysis
Data: 2009
Editora: Taylor & Francis
Relatório da Série N.º: Analytical Letters; Vol. 42, Issue 4
Resumo: Seven pyrethroids (bifenthrin, fenpropathrin, k-cyhalothrin, permethrin, a-cypermethrin, fenvalerate, and deltamethrin) were extracted from water using C18 solid-phase extraction disks, followed by gas chromatography with an electron capture detector (GC-ECD) analysis. The limits of detection in water samples ranged from 0.5 ng L-1 (fenpropathrin) to 110 ng L- 1 (permethrin), applying the calibration graph. The effects of different numbers of (re)utilizations of the same disks (up to four times with several concentrations) on the recoveries of the pyrethroids were considered. The recoveries were all between 70 and 120% after four utilizations of the same disk. There was no difference between these recoveries at a confidence level of 95%.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2956
ISSN: 0003-2719
1532-236X
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/00032710902721949#.UotUCn9qyZQ
Aparece nas colecções:ISEP – GRAQ – Artigos

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