Use and Reuse of SPE Disks for the Determination of Pyrethroids in Water by GC-ECD

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Valentina Domingues (Autor) Outra; Miguel Cabral (Autor) Outra; Arminda Alves (Autor) FEUP; Cristina Delerue Matos (Autor) Outra

Revista

Título: Analytical Letters

Vol. 42 Nº 2

Páginas: 706-726

ISSN: 0003-2719

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 14 Citações

ISI Web of Science

Scopus - 17 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-003-P2J

DOI: 10.1080/00032710902721949

Abstract (EN): Seven pyrethroids (bifenthrin, fenpropathrin, -cyhalothrin, permethrin, -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 0.5ng L-1 (fenpropathrin) to 110ng 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%.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 21