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

Química Nova

Wilma Regina Barrionuevo¹  Fernando Mauro Lanças¹ 

[1] ,Universidade de São Paulo Instituto de Química de São Carlos São Carlos SP

关键词: water analysis;    pyrethroids;    solid-phase extraction;    solid-phase microextraction;   

DOI  :  10.1590/S0100-40422001000200003

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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