Extração em fase sólida (SPE) e micro extração em fase sólida (SPME) de piretróides em água

Wilma Regina Barrionuevo; Fernando Mauro Lanças

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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Solid-phase extraction (SPE) and solid-phase microextraction of pyrethroids in water

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Author(s):	Wilma Regina Barrionuevo ^[1] ; Fernando Mauro Lanças ^[2] Total Authors: 2
Affiliation:	^[1] Universidade de São Paulo. Instituto de Química de São Carlos ^[2] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil Total Affiliations: 2
Document type:	Journal article
Source:	Química Nova; v. 24, n. 2, p. 172-175, 2001-04-00.
Field of knowledge:	Physical Sciences and Mathematics - Chemistry
Abstract
The pyrethroids bifenthrin, permethrin, cypermethrin and deltamethrin were extracted by solid phase extraction (SPE) and solid phase microextraction (SPME). The analysis were performed on a gas chromatograph with electron capture detection (GC-ECD). Octadecil Silano-C18, Florisil and Silica stationary phases were studied for SPE. Better results were obtained for Florisil which gave recoveries from 80% to 108%. Pyrethroids extraction by SPME showed a linear response and a detection limit of 10 pg ml-1. Although the data showed that the two extraction methods were able to isolate the pesticide residues from water samples, the best results were obtained by using SPME which is more sensitive, faster, cheeper, being a more useful technique for the analysis of pyrethroids in drinking water. (AU)

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